† monoplacidadj.

Origin: A borrowing from Greek, combined with English elements. Etymons: mono- comb. form, Greek πλακ- , -id suffix¹.

Etymology: < mono- comb. form + ancient Greek πλακ-, πλάξ flat plate, tablet (see placo- comb. form) + -id suffix¹. Compare polyplacid adj. at poly- comb. form 1.

Zoology. Obsolete. rare. Apparently only attested in dictionaries or glossaries.

Of an echinoderm: having a single madreporite.

ΚΠ

1890 Cent. Dict. Monoplacid, having but one madreporic plate, as a starfish: distinguished from polyplacid.

This entry has been updated (OED Third Edition, December 2002; most recently modified version published online June 2021).

单词	monoplacid
释义	† monoplacidadj. Origin: A borrowing from Greek, combined with English elements. Etymons: mono- comb. form, Greek πλακ- , -id suffix¹. Etymology: < mono- comb. form + ancient Greek πλακ-, πλάξ flat plate, tablet (see placo- comb. form) + -id suffix¹. Compare polyplacid adj. at poly- comb. form 1. Zoology. Obsolete. rare. Apparently only attested in dictionaries or glossaries. Of an echinoderm: having a single madreporite. ΚΠ 1890 Cent. Dict. Monoplacid, having but one madreporic plate, as a starfish: distinguished from polyplacid. This entry has been updated (OED Third Edition, December 2002; most recently modified version published online June 2021). < adj.1890
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