Resembling or having the form of a cotyledon; cotyledon-like in appearance or structure.
From cotyledon + -oid (meaning 'resembling' or 'having the form of'). The -oid suffix comes from Greek eidos (form) and is used when something isn't exactly something but looks like it.
The -oid suffix is perfect for biologists because it means 'kind of like but not quite'—humanoid means human-like but not human, and cotyledonoid means cotyledon-like, letting scientists describe things without being absolutely certain about identity.
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