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-ine1

1.
a suffix of adjectives of Greek or Latin origin, meaning “of or pertaining to,” “of the nature of,” “made of,” “like”:
asinine; crystalline; equine; marine.
Compare -in1 .
Origin
< Latin -īnus, -inus < Greek -inos

-ine2

1.
a suffix, of no assignable meaning, appearing in nouns of Greek, Latin, or French origin:
doctrine; famine; routine.
2.
a noun suffix used particularly in chemical terms (bromine; chlorine), and especially in names of basic substances (amine; aniline; caffeine; quinine; quinoline).
Compare -in2 .
3.
a suffix of feminine nouns (heroine), given names (Clementine), and titles (landgravine).
Compare -ina
Origin
< French < Latin -ina, orig. feminine of -inus; also representing Greek -inē, feminine noun suffix
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for -ine

-ine1

suffix
1.
of, relating to, or belonging to: saturnine
2.
consisting of or resembling: crystalline
Word Origin
from Latin -īnus, from Greek -inos

-ine2

suffix
1.
indicating a halogen: chlorine
2.
indicating a nitrogenous organic compound, including amino acids, alkaloids, and certain other bases: alanine, nicotine, purine
3.
Also -in. indicating a chemical substance in certain nonsystematic names: glycerine
4.
indicating a mixture of hydrocarbons: benzine
5.
indicating a feminine form: heroine
6.
an obsolete equivalent of -yne
Word Origin
via French from Latin -ina (from -inus) and Greek -inē
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for -ine

suffix used to form adjectives from nouns, from French -ine, fem. of -in, or directly from Latin -inus "of, like."

chemical suffix, sometimes -in, though modern use distinguishes them; early 19c., from French -ine, from Latin -ina, fem. form of suffix used to form adjectives from nouns. In French commonly used to form words for derived substances, hence its extended use in chemistry.

Online Etymology Dictionary, © 2010 Douglas Harper
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-ine in Medicine

-ine 2
suff.

  1. or -in A chemical substance: bromine, amine, quinine.

  2. Amino acid: glycine.

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