[ plan-yuh-luh ]
/ ˈplæn yə lə /

noun, plural plan·u·lae [plan-yuh-lee] /ˈplæn yəˌli/. Zoology.

the ciliate, free-swimming larva of a coelenterate.

Origin of planula

1865–70; < New Latin, diminutive of Latin plānum something flat. See plane1, -ule
Related formsplan·u·lar, plan·u·late [plan-yuh-leyt] /ˈplæn yəˌleɪt/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for planula

British Dictionary definitions for planula


/ (ˈplænjʊlə) /

noun plural -lae (-ˌliː)

the ciliated free-swimming larva of hydrozoan coelenterates such as the hydra

Derived Formsplanular, adjective

Word Origin for planula

C19: from New Latin: a little plane, from Latin plānum level ground
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for planula


[ plănyə-lə ]

Plural planulae (plănyə-lē′)

The flat, free-swimming, ciliated larva of a cnidarian.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.