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Related to planula: scyphistoma, Colloblast


n. pl. plan·u·lae (-lē′)
The flat, free-swimming, ciliated larva of a cnidarian.

[New Latin plānula, from Latin, feminine diminutive of plānus, flat (from its shape); see pelə- in Indo-European roots.]

plan′u·lar, plan′u·late′ (-lāt′) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -lae (-ˌliː)
(Zoology) the ciliated free-swimming larva of hydrozoan coelenterates such as the hydra
[C19: from New Latin: a little plane, from Latin plānum level ground]
ˈplanular adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈplæn yə lə)

n., pl. -lae (-ˌli)
the free-swimming larva of a cnidarian.
[1865–70; < New Latin, diminutive of Latin plānum something flat. See plane1, -ule]
plan′u•lar, plan′u•late (-ˌleɪt) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.planula - the flat ciliated free-swimming larva of hydrozoan coelenteratesplanula - the flat ciliated free-swimming larva of hydrozoan coelenterates
hydroid, hydrozoan - colonial coelenterates having the polyp phase dominant
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
According to the US National Oceanic and Atmospheric Administration, coral larvae, also called planula, often float in the ocean for days or weeks before dropping to the ocean floor.
Nutritional inputs from dinoflagellate symbionts in reef-building corals is minimal during planula larval life stage.
Ayri eseyli olan bu turde de serbest yuzen planula larvasi kendini bir yere tespit eder ve skifopolibe donuserek skifostoma larvasini olusturur.
meleagris, desde individuos del estadio de larva, planula y medusas adultas, y afirmaron que la mayor influencia de tallas adultas se observo en zonas de influencia marina.
This section is 20 m thick representing the Middle Oxfordian (Transversarium Zone) to lowermost Kimmeridgian (Planula Zone) composed by spongiolithic limestones, spongiolithic marls-peloidal limestones, marl-limestone rhythmite and marl (Oloriz et al., 2002,2012).
Planktic planula (self-feeding) larvae, representing the class Anthozoa, are also common (28.6%).
Release of planula larvae, settlement and development of Siderastrea stellata Verrill, 1868 (Anthozoa, Scleractinia).
A young planula settles down as a sedentary polyp, which can sprout more polyps, sometimes for several years.
Once the egg and sperm meet together, a larva (also called planula) is produced.
Broadcast spawners carry out external fertilization in the water column, whereas brooders carry out internal fertilization within the maternal polyp and release planula larvae [1-5].
Planula larvae of the scyphomedusae Linuche unguiculata--commonly known as the thimble jellyfish--are to blame for this form of dermatitis.