proximad adv. [L. proximus, nearest; -ad, toward] Toward the end or portion nearest the body.
proximal a. [L. proximus, nearest] 1. Toward or nearer the place of attachment or reference of the center or midline of the body. 2. (BRYO) Toward the ancestrula.
proximal chiasma A chiasma between an inversion loop and the centromere.
proximal gill wheal (MOLL: Bivalvia) In oysters, a low ridge (wheal) on the inner surface of the valve showing the proximal edge of the gills.
proximal hemiseptum (BRYO: Stenolaemata) A hemiseptum projecting from the proximal zooid wall.
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