Word Unit: -oid, -oidal, -oidism, -odic (Greek: a suffix; like, resembling, similar to, form)

Inter-related cross references, directly or indirectly, involving word units dealing with "form, shape, appearance": eido-; figur-; form-; icono-; ideo-; imag-; morpho-; typo-.

Word Unit: oiko-, oik-, oikio-, oico- (Greek: house, dwelling, home)
Word Unit: -olatry, -latry, -olater-, -later, -olatress, -latress, -olatria, -olatrous, -latrous (Greek: worship; excessively, fanatically devoted to someone or something; “service paid to the gods”)

Related religious-word units: church; dei-, div-; ecclesi-; fanati-; hiero-; idol-; theo-; zelo-.

Word Unit: -olent, -ulent (Latin: a suffix; full of, disposed to)
Word Unit: oleo-, ole-, -oleic, ol- (Greek > Latin: [olive] oil; fat)

Related fat-word units: adipo-; lard; lipo-; obeso-; omento-; pimelo-; pio-; sebo-; steato-.

Word Unit: -oleo, -olere + (Latin: to destroy, to die out)
Word Unit: olfacto-, olfact- (Latin: to smell; pertaining to the sense of smell; scent; to cause to smell at)

Inter-related cross references, directly or indirectly, involving word units meaning "smell, odor": arom-; brom-; odor-, odori-; osmo-; osphresio-; ozon-.

Word Unit: olig-, oligo- (Greek: prefix; scanty, little, meager, tiny, infrequent; abnormally few or small)

Related "few, small, less, little" word units: micro-; mini-; mio-, meio-; nano-.

Word Unit: olive- + (Greek > Latin > French: the tree Olea europaea, used in its etymological sense)
Word Unit: -ology, -logy, -ologist, -logist (Greek: a suffix meaning: to talk, to speak; a branch of knowledge; any science or academic field that ends in -ology which is a variant of -logy; a person who speaks in a certain manner; someone who deals with certain topics or subjects)
Cross references of word families related directly, or indirectly, to: "talk, speak, speech; words, language; tongue, etc.": cit-; clam-; dic-; fa-; -farious; glosso-; glotto-; lalo-; linguo-; locu-; logo-; loqu-; mythico-; ora-; -phasia; -phemia; phon-; phras-; Quotes: Language,Part 1; Quotes: Language, Part 2; Quotes: Language, Part 3; serm-; tongue; voc-.

Word Unit: Olympics: Historical and Modern (Olympia, a place in Greece in the western Peloponnese, scene of the Olympic games)
Word Unit: -oma, -ome, -omatoid (Greek: tumor, morbid growth; to swell, bulge; mass, group)
Word Unit: ombro-, ombr- (Greek: rain, rainstorm; showers of rain; aqueous vapor in the atmosphere; precipitation or falling down from the sky of a form of water; such as, rain, snow, hail, sleet, or mist)
Word Unit: omega; Ω, ω + (Greek: the 24th and last letter of the Greek alphabet; Ω, ω; the ending, the last of anything)
Word Unit: omen (Latin: foreboding; anything perceived or happening that is believed to portend or to suggest that something is going to happen which may be a good or an evil event or circumstance in the future)

Cross references of word families that are related directly, or indirectly, to: "divination, diviner; seer, soothsayer, prophecy, prophesy, prophet": augur-; auspic-; fa-, fate; Fates in action; futur-; -mancy; -phemia; sorc-, sorcery; vati-.

Word Unit: omento-, oment- + (Latin: fat, adipose tissue; and by extension, caul, intestines)

Related fat-word units: adipo-; lard; lipo-; obeso-; oleo-; pimelo-; pio-; sebo-; steato-.

Word Unit: omicron; Ο, ο + (Greek: the fifteenth letter of the Greek alphabet)
Word Unit: -omics, -ome, -omes (Greek: said to be a stem for "all, every, whole", or "complete"; that is, a field of study in biology that refers to the whole set of omics including their -omics and -ome subfields in order to understand life as a holistic existence and organic beings as a whole)
Word Unit: ommat-, ommato- + (Greek: eye)
Word Unit: omni-, omn- (Latin: all, every)

Related "all, every" word unit: pan-, panto-.