tetragenousとは 意味・読み方・使い方

形容詞

tetragenous (not comparable)

1. (botany, zoology) Involving groups of four; arranged in fours.
   • 2006, Anil Kumar, Botany for Degree Pteridophyta (page 184)

     The leaves are arranged in four longitudinal rows along the stem. There are two rows of smaller leaves attached to the upper side of stem and two rows of larger leaves attached laterally. The strobili are tetragenous (four-angled) […]

   • 2010, James H. Thorp, ‎Alan P. Covich, Ecology and Classification of North American Freshwater Invertebrates

     Mussels that employ all four demibranchs for brooding are referred to as tetragenous.

   • 2012, G. Bauer, ‎K. Wächtler, Ecology and Evolution of the Freshwater Mussels Unionoida (page 234)

     Eggs are incubated in all four gills (tetragenous). In the other groups the gill structure is stabilized by increasing the number of connectives and by organizing them into continuous walls (Kat 1984).