mem bran i por a

[Latin membrana = a membrane, and por us =a channel, a pa age.] 1. Zool.: The typical genus of the family Mem bran i por ide (q. v.). 2. Palæont .: Species are found in the Cretaceous and in the Tertiary rocks. měm-bra-ni-por-I-dæ, s. pl. [Mod. Lat. mem branipor (a); Lat. fem. pl. adj. suff. -idæ.] 1. Zool .: A family of Bryozoa or Polyzoa. The polyzoon, which is calcareous, or partly horny, partly calcareous, is composed of horizontal cells contiguous to each other. The species grow_on shells, corals, . Genera: Mem bran i por a, Lepralia, . 2. Palæont.: The family has existed from Paleozoic times till now. †měm-bra-noi-o-ġỹ, subst . [Lat. membrana =a membrane, and Gr. logos =a word, a disc our so.] A treatise on membranes; the science which treats of membranes. měm-bra-nous, *měm-brā-ně-ous, adj. [Fr. membraneux; Ital. & Sp. membranos0.] 1. Ord. Lang.: Belonging to or consisting of mem brane; resembling a membrane. 2. Bot .: Thin and semi-transparent, like a fine membrane, as is the case with the leaves of mo es. It is non-development of parenchyma which makes the leaves of some plants membranous. ( Lindley .) membranous cellular-ti ue, s . Bot.: Cellular ti ue in which the walls of the cells are composed solely of membrane.