prothorax

American  

[proh-thawr-aks, -thohr-] / proʊˈθɔr æks, -ˈθoʊr- /

noun

• prothoraxes,
  plural
• prothoraces
  plural

1. the anterior division of the thorax of an insect, bearing the first pair of legs.

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prothorax British  

/ prəʊˈθɔːræks /

noun

1. the first segment of the thorax of an insect, which bears the first pair of walking legs See also mesothorax metathorax

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Other Word Forms

Derived Forms

• prothoracic
  adjective

Inflected Forms

Nouns

• prothoraces
  plural
• prothoraxes
  plural

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Etymology

Origin of prothorax

From New Latin, dating back to 1820–30; see origin at pro- ¹, thorax

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Example Sentences

See Examples For:

prothorax

Cephalic foramen: the posterior or occipital foramen of head through which the dorsal vessel, oesophagus, salivary ducts and ventral nerve cords pass from head to prothorax.

From Explanation of Terms Used in Entomology by John. B. Smith

Hood: of the maxilla is the galena; q.v.: in Tingitidae the elevated portion of the prothorax, often covering the head.

From Explanation of Terms Used in Entomology by John. B. Smith

The larvae are more specialized than those of other Adephaga, the head and prothorax being very large and broad, the succeeding segments slender and incompletely chitinized.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" by Various

Ampulla: Orthoptera; an extensile sac between head and prothorax used by the young in escaping from oötheca, and later, in molting: Heteroptera; a blister-like enlargement at the middle of the anterior margin of the pro-thorax.

From Explanation of Terms Used in Entomology by John. B. Smith

Microthorax: a supposed thoracic ring between the head and prothorax.

From Explanation of Terms Used in Entomology by John. B. Smith

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