a suffix, occurring in adjectives of Greek and Latin origin, meaning “pertaining to,” and (in nouns thence derived) also imitated in English (coffin; cousin, etc.).
Hone In vs. Home InDoes a plane home in on a target or hone in on it? Does a musician hone her skills or home them? Are these two verbs interchangeable or do they have discrete meanings? Today we explore the origins and uses of hone and home. Hone entered English as a noun for a pointed rock used as a landmark. In the 1400s, it began to be …
Origin of -in1
Middle English -in, -ine < Old French < Latin -inus, -ina, -inum < Greek -inos, -inē, -inon
Definition for -in (2 of 3)
a noun suffix used in a special manner in chemical and mineralogical nomenclature (glycerin; acetin, etc.). In spelling, usage wavers between -in and -ine. In chemistry a certain distinction of use is attempted, basic substances having the termination -ine rather than -in (aconitine; aniline, etc.), and -in being restricted to certain neutral compounds, glycerides, glucosides, and proteids (albumin; palmitin, etc.), but this distinction is not always observed.
Origin of -in2
< New Latin -ina. See -ine2
Definition for -in (3 of 3)
a suffixal use of the adverb in, extracted from sit-in, forming compound nouns, usually from verbs, referring to organized protests through or in support of the named activity (kneel-in; chain-in; be-in) or, more generally, to any organized social or cultural activity (cook-in; sing-in).
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British Dictionary definitions for -in
suffix forming nouns
indicating a neutral organic compound, including proteins, glucosides, and glyceridesinsulin; digitoxin; tripalmitin
indicating an enzyme in certain nonsystematic namespepsin
indicating a pharmaceutical substancepenicillin; riboflavin; aspirin
indicating a chemical substance in certain nonsystematic namescoumarin
Word Origin for -in
from New Latin -ina; compare -ine ²
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
Medicine definitions for -in
Neutral chemical compound:inulin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.