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spicula Line breaks: spic¦ula
Pronunciation: /ˈspɪkjʊlə/

Definition of spicula in English:

noun (plural spiculaeˈspɪkjʊliː)

1A hard, pointed projection on part of a plant or animal; a spine or prickle.
Example sentences
  • In certain genera with a simple spike this is clearly proved by the structure of the terminal flower or spicula.
  • Others are barbed like the spicula of a bee's sting.
  • The prickly ash is armed with spiculae, like the locust.
1.1A sharp-pointed crystalline structure.
Example sentences
  • The spiculae of hoar frost were of all lengths, from an inch downward.
  • The frozen moisture may fall in spiculae or crystals of ice.
  • We have only to suppose, the particles which are employed in crystallization, to be endowed with a tendency to form spiculae.


Mid 18th century: modern Latin, diminutive form of Latin spica 'spike'.

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