PARASITE

n. Pa2r'a3-sit. Gr., irapdo-iros (lit., one who eats with another [from irapd, beside, and <TITOS, food]). Lat., paras it us. Fr.,p. Ger., Parasit, Schmarotzer. 1. An animal or plant living and subsisting within some ti ue or organ, or upon some surface, of another animal or plant. [A, 2.] Cf. COINOSITE, OIKOSITE, PHAOOSITE, XENOSITE, and NOS TO SITE. 2. See FCETUS in fcetu. Accidental p's. Internal p's having the habits, but not referable to the cla , of Entozoa. The following are included in this cla in the nomenclature of the Royal College of Physicians of London: Pentastomadenticulatum, Penttistoma cbnstrictum, (Estrus hominis, and Anthomyia cam'c?iZam. Endophytic p. A p. living in the ti ues and organs of its host. [B, 209 (a, 27).] Epiphytic p. A p. living on the surface of the skin and mucous membranes of the host. [B, 209 (a, 27).] External p. See ECTOPARASITE. Facultative p. 1. A p. that is not confined to any particular animal organism. 2. Of De Bary, a p. which can only satisfy the conditions of its life in the animal organism, but which neverthele leaves it at a certain period of its existence. [B, 209 (a, 27).] False p. See PSEUDO PARASITE. Internal p. See ENDOPARASITE. Obligatory p. Of De Bary, a p. that can not subsist away from its host. [B, 209 (a, 27).] Vegetable p's. Fr., p's veyetaux. Plants distinguished by absence or deficiency of chlorophyll, deriving their food from other living organisms. They are confined among phanerogams to the dicotyledons, and among cryptogams to the Fungi (chiefly the lower) and a few Alga:. [B, a3, 121, 291 (a, 35).] [s. 215]