planula
(noun) the flat ciliated free-swimming larva of hydrozoan coelenterates
Source: WordNet® 3.1
planulae
plural of planula
Source: Wiktionary
Plan"u*la, n.; pl. Planulæ. Etym: [L., a little plane.]
1. (Biol.)
Definition: In embryonic development, a vesicle filled with fluid, formed from the morula by the divergence of its cells in such a manner as to give rise to a central space, around which the cells arrange themselves as an envelope; an embryonic form intermediate between the morula and gastrula. Sometimes used as synonymous with gastrula.
2. (Zoöl.)
Definition: The very young, free-swimming larva of the coelenterates. It usually has a flattened oval or oblong form, and is entirely covered with cilia.
Source: Webster’s Unabridged Dictionary 1913 Edition
18 November 2024
(adjective) not functioning properly; “something is amiss”; “has gone completely haywire”; “something is wrong with the engine”
International Coffee Day (September 29) is an occasion to promote and celebrate coffee as a beverage, with events occurring in places across the world. A day to promote fair trade coffee and raise awareness for the coffee growers’ plight. Other countries celebrate this event on October 1.
