zygopleuran.
/zʌɪɡəʊˈplʊərə//zɪɡəʊˈplʊərə/ Biology.
With plural agreement. Organic forms having bilateral symmetry, with either two or four antimeres or corresponding opposite parts (dipleura n., tetrapleura n. at tetrapleuron n. 2).
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the world > life > biology > physical aspects or shapes > physical arrangement or condition > [noun] > symmetry
subequality1836
tetrapleuron1883
zygopleura1883
tetrasymmetry1889
1883 P. Geddes in Encycl. Brit. XVI. 844/2 The Zygopleura include forms bilaterally symmetrical in the strictest sense, in which not more than two radial planes, and these at right angles to each other, are present. Haeckel again divides these, according to the number of antimeres, into Tetrapleura and Dipleura.
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zygoˈpleural adj. having bilateral symmetry.
This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2019).
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n.1883