Word Unit: -ous, -ious, -eous (Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.)
Word Unit: ovari-, ovario-, ova-, -ovaria, -ovarial (Latin: egg)
Word Unit: ovi (Latin: egg)
Word Unit: ovo- (Latin: egg)
Word Unit: ovum-, ovu- (Latin: egg)
Word Unit: ox- + (Indo-European > Old English: male bovine)

Related "bovine; cow, ox, bull" word units: bou-; bovo-; tauro-; vaccino-.

Word Unit: oxal-, ox- + (Greek > Latin: wood sorrel; the leaves of the wood sorrel are acidic to the taste)
Word Unit: oxy-, -oxia, -oxic (Greek: sharp, acute, pointed, keen; sour, acid, acidic, pungent)

Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; aceto-; acid-; acies- (not "sour"); acuto- (not "sour"); pung- (not "sour").

Word Unit: ozono-, ozon-, ozoni-, ozo-, oz- + (Greek: to smell; stink; generally used in a bad sense)

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