-oid(redirected from -oidal)
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1. Resembling; having the appearance of; related to: acanthoid.
2. One that resembles something specified or has a specified quality: humanoid.
suffix forming adjectives, suffix forming nouns
indicating likeness, resemblance, or similarity: anthropoid.
[from Greek -oeidēs resembling, form of, from eidos form]
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; humanoid; planetoid. Compare -ode 1 .
A suffix meaning "like" or "resembling," as in ellipsoid, a geometric solid that resembles an ellipse.