a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
an essential or integral attribute or quality: a sense of humor is part of a healthy personality.
a section or division of a literary work.
a portion, member, or organ of an animal body.
any of a number of more or less equal quantities that compose a whole or into which a whole is divided: Use two parts sugar to one part cocoa.
an allotted portion; share.
Usually, parts.
a region, quarter, or district: a journey to foreign parts.
a quality or attribute establishing the possessor as a person of importance or superior worth: Being both a diplomat and a successful businesswoman, she is widely regarded as a woman of parts.
either of the opposing sides in a contest, question, agreement, etc.
the dividing line formed in separating the hair of the head and combing it in different directions.
a constituent piece of a machine or tool either included at the time of manufacture or set in place as a replacement for the original piece.
the written or printed matter extracted from the score that a single performer or section uses in the performance of concerted music: a horn part.
a section or division of a composition: the allegro part of the first movement.
participation, interest, or concern in something; role: The neighbors must have had some part in planning the surprise party.
a person's share in or contribution to some action; duty, function, or office: You must do your part if we're to finish by tonight.
a character or role acted in a play or sustained in real life.
verb (used with object)
to divide (a thing) into parts; break; cleave; divide.
to comb (the hair) away from a dividing line.
to divide into shares; distribute in parts; apportion.
to put or keep apart; separate: They parted the calves from the herd.
to separate (silver) from gold in refining.
to cut (one part) away from a piece, as an end from a billet.
to keep the surface of (a casting) separate from the sand of the mold.
Obsolete. to leave.
verb (used without object)
to be or become divided into parts; break or cleave: The oil tanker parted amidships.
to go or come apart; separate, as two or more things.
to go apart from or leave one another, as persons: We'll part no more.
to be or become separated from something else (usually followed by from ).
Nautical. to break or become torn apart, as a cable.
to depart.
to die.
partial; of a part: part owner.
in part; partly: part black.
Verb phrases
part with, to give up (property, control, etc.); relinquish: to part with one's money.
for one's part, as far as concerns one: For my part, you can do whatever you please.
for the most part, with respect to the greatest part; on the whole; generally; usually; mostly: They are good students, for the most part.
in good part,
without offense; in a good-natured manner; amiably: She was able to take teasing in good part.
to a great extent; largely: His success is in good part ascribable to dogged determination.
in part, in some measure or degree; to some extent; partly; partially: The crop failure was due in part to unusual weather conditions.
on the part of,
so far as pertains to or concerns one: He expressed appreciation on the part of himself and his colleagues.
as done or manifested by: attention on the part of the audience.
Also, on one's part.
part and parcel, an essential, necessary, or integral part: Her love for her child was part and parcel of her life.
part company,
to bid farewell or go separate ways; leave one another.
to dissolve a personal affiliation, relationship, etc., especially because of irreconcilable differences.
to disagree.
take part, to participate; share or partake: They refused to take part in any of the activities of the community.
take someone's part, to align oneself with; support; defend: His parents took his part, even though he was obviously in the wrong.

before 1000; (noun) Middle English (< Old French < L), Old English < Latin part- (stem of pars) piece, portion; (v.) Middle English parten < Old French partir < Latin partīre, derivative of pars

multipart, adjective
subpart, noun

1. component, ingredient, division, sector. Part, piece, portion, segment, section, fraction, fragment refer to something that is less than the whole. Part is the general word: part of a house. A piece suggests a part which is itself a complete unit or it may mean an irregular fragment: a piece of pie; a piece of a broken vase. A portion is a part allotted or assigned to a person, purpose, etc.: a portion of food. A segment is often a part into which something separates naturally: a segment of an orange. Section suggests a relatively substantial, clearly separate part that fits closely with other parts to form a whole: a section of a fishing rod, a book. Fraction suggests a less substantial but still clearly delimited part, often separate from other parts: a fraction of his former income. Fragment suggests a broken, inconsequential, incomplete part, with irregular or imprecise outlines or boundaries: a fragment of broken pottery, of information. 6. apportionment, lot. 13. responsibility. 18. sever, sunder, dissociate, disconnect, disjoin, detach.

1. whole. 15. join. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
part (pɑːt)
1.  a piece or portion of a whole
2.  an integral constituent of something: dancing is part of what we teach
3.  a.  an amount less than the whole; bit: they only recovered part of the money
 b.  (as modifier): an old car in part exchange for a new one
4.  one of several equal or nearly equal divisions: mix two parts flour to one part water
5.  a.  an actor's role in a play
 b.  the speech and actions which make up such a role
 c.  a written copy of these
6.  a person's proper role or duty: everyone must do his part
7.  (often plural) region; area: you're well known in these parts
8.  anatomy any portion of a larger structure
9.  a component that can be replaced in a machine, engine, etc: spare parts
10.  (US), (Canadian), (Austral) British equivalent: parting the line of scalp showing when sections of hair are combed in opposite directions
11.  music
 a.  one of a number of separate melodic lines making up the texture of music
 b.  one of such melodic lines, which is assigned to one or more instrumentalists or singers: the viola part; the soprano solo part
 c.  See part song such a line performed from a separately written or printed copy
12.  for the most part generally
13.  for one's part as far as one is concerned
14.  in part to some degree; partly
15.  of many parts having many different abilities
16.  on the part of on behalf of
17.  part and parcel an essential ingredient
18.  play a part
 a.  to pretend to be what one is not
 b.  (foll by in) to have something to do (with); be instrumental (in): to play a part in the king's downfall
19.  take in good part to respond to (teasing) with good humour
20.  take part in to participate in
21.  take someone's part to support someone in an argument
vb (foll by from) (foll by with) (foll by from)
22.  to divide or separate from one another; take or come apart: to part the curtains; the seams parted when I washed the dress
23.  to go away or cause to go away from one another; stop or cause to stop seeing each other: the couple parted amicably
24.  to leave; say goodbye (to)
25.  to relinquish, esp reluctantly: I couldn't part with my teddy bear
26.  to cause to relinquish, esp reluctantly: he's not easily parted from his cash
27.  (intr) to split; separate: the path parts here
28.  (tr) to arrange (the hair) in such a way that a line of scalp is left showing
29.  (intr) a euphemism for die
30.  archaic (intr) to depart
31.  part company
 a.  to end a friendship or association, esp as a result of a quarrel; separate: they were in partnership, but parted company last year
 b.  (foll by with) to leave; go away from; be separated from
32.  to some extent; partly
[C13: via Old French from Latin partīre to divide, from pars a part]

parts (pɑːts)
pl n
1.  personal abilities or talents: a man of many parts
2.  short for private parts

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1000, "part of speech," from O.Fr. part, from L. partem (nom. pars, gen. partis) "part, piece, side, share," related to L. portio "share, portion," from PIE base *per- "to assign, allot" (cf. Gk. peprotai "it has been granted," Skt. purtam "reward," Hittite parshiya- "fraction, part"). It has replaced
native deal in most senses. Theatrical sense (1495) is from an actor's "share" in a performance. Meaning "the parting of the hair" is 1890, Amer.Eng.

late 13c., "to divide into parts," from O.Fr. partir "to divide, separate," from L. partire, from pars (see part (n.)). Sense of "to separate (someone from someone else)" is from early 14c.; that of "to take leave" is from early 15c. Meaning "to separate the hair" is attested from 1610s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

part (pärt)

  1. A portion, division, piece, or segment of a whole.

  2. Any of several equal portions or fractions that can constitute a whole or into which a whole can be divided.

  3. An organ, a member, or another division of an organism.

  4. An anatomical part; pars.

  5. parts The external genitalia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Computing Dictionary

PARTS definition

Digitalk. Visual language for OS/2 2.0.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences for parts
Actinomorphic parts of plants that are radially symmetrical in arrangement.
Vein the externally visible vascular bundles, found on leafs, petals and other
Actinomorphy when the flower parts are arranged with radial symmetry.
Terms for fruits accessory structures parts of fruits that do not form from
  the ovary.
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