astrosphere

[ as-truh-sfeer ]

noun

, Biology.

1. the central portion of an aster, in which the centrosome lies.
2. the whole aster exclusive of the centrosome.

astrosphere

/ ˈæstrəˌsfɪə /

noun

1. another name for centrosome
2. Also calledattraction sphere the part of the aster excluding the centrosome

Word History and Origins

Origin of astrosphere¹

First recorded in 1895–1900; astro- + sphere