(s) Resembling; obtaining the appearance of; regarding: acanthoid.
(s) One that resembles one thing specified or has a specified quality: humanoid.
(s) Of comparable form to, yet not just like. Obtaining the likeness of. Suffix appended to different terms to make an adjective type.
(n) A termination of many adjectives (and of nouns thence derived) of Greek origin, meaning ‘having the form or resemblance’ (often implying an incomplete or imperfect resemblance) of the thing indicated, ‘like,’ as in anthropoid, like man, crystalloid, like crystal, hydroid, like water, etc. It is much used as an English formative, chiefly in scientific words.