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Clypeus vs Undefined - What's the difference?

clypeus | undefined |

As a noun clypeus

is the shield-shaped front part of an insect's head or a spider's cephalothorax.

As an adjective undefined is

lacking a definition or value.

clypeus

English

(wikipedia clypeus)

Noun

(clypei)
  • The shield-shaped front part of an insect's head or a spider's cephalothorax.
  • * 1990': Cuisinart stuck a human eyelash to his '''clypeus with saliva, twisted it into a handlebar mustache, and greeted citizens as they arrived at the rim of the sink. — Daniel Evan Weiss, ''The Roaches Have No King (Serpent's Tail 2001, p.16)
  • * 1996': When viewed from the front, the part of the carapace between the anterior eyes and the front edge of the carapace is called the '''clypeus . — Michael J. Roberts, ''Spiders of Britain and Northern Europe (Collins 1996, p. 14)
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    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined