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adjective Chemistry.
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Ortho
is always a great word to know.
So is asymmetric. Does it mean:
| having an unsymmetrical arrangement of atoms in a molecule, or noting a carbon atom bonded to four different atoms or groups |
| pertaining to compounds that are not hydrocarbons or their derivatives |
Dictionary.com Unabridged
ortho-
1.
a combining form occurring in loanwords from Greek, where it meant “straight,” “upright,” “right,” “correct” (orthodox) and on this model used in the formation of compound words (orthopedic).
2.
Chemistry.
a.
b.
a combining form used in the names of the salts of these acids: if the acid ends in -ic, the corresponding salt ends in -ate (orthoboric acid (H3BO3) and potassium orthoborate (K3BO3)); if the acid ends in -ous, the corresponding salt ends in -ite (orthoantimonous acid (H3SbO3) and potassium orthoantimonite (K3SbO3)).
Also, especially before a vowel, orth-.
Origin:
< Greek, combining form of orthós straight, upright, correct
< Greek, combining form of orthós straight, upright, correct
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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|
Link To ortho
Etymonline
Word Origin & History
ortho-
a comb. element in forming scientific and technical words, from Gk. ortho-, stem of orthos "straight, true, correct, regular," from PIE *eredh- "high" (cf. Skt. urdhvah "high, lofty, steep," L. arduus "high, steep," O.Ir. ard "high").
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
ortho- or orth-
pref.
Straight; upright; vertical: orthotropic.
Correct; correction: orthopsychiatry.
Hydrated form of an acid or of its salts: orthoboric acid.
Diatomic molecules in which the nuclei have the same direction of spin: orthohydrogen.
ortho-
Abbr. o- Of or relating to one of three possible isomers of a benzene ring with adjacent carbon atoms having attached chemical groups. Usually used in italic: ortho-dibromobenzene.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Abbreviations & Acronyms
| ORTHO American Orthopsychiatric Association |
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Word Dynamo Rating For Ortho
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