Definition of gena in English:

gena

nounPlural genae ˈdʒiːnəˈjēnə

Zoology

The lateral part of the head of an insect or other arthropod below the level of the eyes.
〔动〕颊
Example sentencesExamples
- In summary, it is not only essential for determining the anterior border to the progression furrow but also for the morphogenesis of major parts of the dorsal and ventral (gena) head.
- The specimen is an external mold and tectonic flattening of the genae appears to have produced a greater width than length.

Derivatives

genal

adjective

Zoology

Genal regions are angular but are not developed into genal spines.
Example sentencesExamples
- Outside this angle the cephalic margin curves backward and outward, forming a notch beneath which the antenna may have emerged, then curves backward into the genal spine.
- The cephalon lacks definite genal spines, and the tail spine, insofar as it can be reconstructed, does not appear to have been very long relative to the body.
- The genal spine of the very smallest specimens is about as long as the remainder of the cheek, and remains distinct until late in meraspid ontogeny.
- Its posterior margin runs at right angles to the longitudinal axis, before swinging inwards to form distinct genal angles and a genal epimeron on the left-hand side.

Origin

Early 19th century: Latin, literally 'cheek'.

Definition of gena in US English:

gena

nounˈjēnə

Zoology

The lateral part of the head of an insect or other arthropod below the level of the eyes.
〔动〕颊
Example sentencesExamples
- The specimen is an external mold and tectonic flattening of the genae appears to have produced a greater width than length.
- In summary, it is not only essential for determining the anterior border to the progression furrow but also for the morphogenesis of major parts of the dorsal and ventral (gena) head.

Origin

Early 19th century: Latin, literally ‘cheek’.

单词	gena
释义	Definition of gena in English: gena nounPlural genae ˈdʒiːnəˈjēnə Zoology The lateral part of the head of an insect or other arthropod below the level of the eyes. 〔动〕颊 Example sentencesExamples In summary, it is not only essential for determining the anterior border to the progression furrow but also for the morphogenesis of major parts of the dorsal and ventral (gena) head. The specimen is an external mold and tectonic flattening of the genae appears to have produced a greater width than length. Derivatives genal adjective Zoology Genal regions are angular but are not developed into genal spines. Example sentencesExamples Outside this angle the cephalic margin curves backward and outward, forming a notch beneath which the antenna may have emerged, then curves backward into the genal spine. The cephalon lacks definite genal spines, and the tail spine, insofar as it can be reconstructed, does not appear to have been very long relative to the body. The genal spine of the very smallest specimens is about as long as the remainder of the cheek, and remains distinct until late in meraspid ontogeny. Its posterior margin runs at right angles to the longitudinal axis, before swinging inwards to form distinct genal angles and a genal epimeron on the left-hand side. Origin Early 19th century: Latin, literally 'cheek'. Definition of gena in US English: gena nounˈjēnə Zoology The lateral part of the head of an insect or other arthropod below the level of the eyes. 〔动〕颊 Example sentencesExamples The specimen is an external mold and tectonic flattening of the genae appears to have produced a greater width than length. In summary, it is not only essential for determining the anterior border to the progression furrow but also for the morphogenesis of major parts of the dorsal and ventral (gena) head. Origin Early 19th century: Latin, literally ‘cheek’.
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