-oidea

noun plural suffix

-oi·​dea

ˈȯidēə

variants or -oida

-də

or -oidei

-dēˌī

: animals characterized by or of the nature of

—in names of higher taxa in zoology

Echinoidea

Hydroida

Ganoidei

Word History

Etymology

-oidea, New Latin, from Latin -oïdes -oid + -ea, neuter plural of -eus -eous; -oida, New Latin, from Latin -oïdes; -oidei, New Latin, from Latin -oïdes + -ei, masculine plural of -eus -eous

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