definitions

-oid

a suffix meaning “resembling,” “like,” used in the formation of adjectives and nouns (and often implying an incomplete or imperfect resemblance to what is indicated by the preceding element): alkaloid; anthropoid; cardioid; cuboid; lithoid; ovoid; planetoid.

RELATED CONTENT

Nephanalysis, Sitar, Wombat, And Other Words That Trended On Dictionary.com This WeekWhat do "spivvy," "smuggery," "stingo," and "schlemiel" have in common? You were looking them up on Dictionary.com last week.
READ MORE
Nephanalysis, Sitar, Wombat, And Other Words That Trended On Dictionary.com This WeekWhat do "spivvy," "smuggery," "stingo," and "schlemiel" have in common? You were looking them up on Dictionary.com last week.
READ MORE

Nearby words

-odus, -odynia, -off, -oholic, -oic, -oid, -oidea, -ol, -ola, -ole, -ologist
Compare -ode1.

Origin of -oid

< Greek -oeidēs, equivalent to -o- -o- + -eidēs having the form of, derivative of eîdos form
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for -oid

-oid

suffix forming adjectives, suffix forming nouns

indicating likeness, resemblance, or similarityanthropoid

Word Origin for -oid

from Greek -oeidēs resembling, form of, from eidos form
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 -oid

-oid

suff.

Resembling; one that resembles:cancroid.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for -oid

-oid

A suffix meaning “like” or “resembling,” as in ellipsoid, a geometric solid that resembles an ellipse.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.