ostiole (ostiol)

[L. ostiolum, a little door: see ostiolum.].] A small opening or entrance; a little ostium. Specifically - ( a ) In bot., the orifice or aperture in the apex of the conceptacles of certain algse, the perithecia of many fungi, the anther-cells of certain phanerogams, etc., through which the spores, pollen-grains, etc., are discharged: same as pore. (b) In zool., one of the openings on the under side of the thorax of many heterop terous insects, through which a fluid of disagreeable odor may be discharged. Also spelled osteole. ostiolum (os-ti'ō-lum), n.; pl. ostiola (-lä). [L., a little door or opening, dim. of ostium, a door, opening, orifice: see ostium, ostiary.] A small opening; specifically, in zoöl. and bot., same as ostiole. ostitic (os-tit'ik), a. [ ostitis (os-ti'tis), n. [NL., ὀστέον , bone, + -it is .] Same as osteitis . ostium (os'ti-um), n .; pl. ostia (-a). [L., a door, mouth, entrance; cf. os , mouth.] An opening or entrance; a mouth; an os. Specifically - (a) In human an at ., either opening, uterine or abdominal, of a Fallopian tube or oviduct. These are called respectively constricted communication between the dorsal and ventral ostium uterinum and ostium abdominale . (b) In ichth ., the parts of the cerebellar ventricle in some sharks. W. K. Parker. - Gastric ostium, in sponges, the mouth by which a radial tube opens into the para gaster. hostelry: see hostry .] An inn; a tavern: esostler, ostlere . See hostler , hostler e . pecially in Italy. Thy master, that lodges here in my osteria , is a rare man of art; they say he's a witch. Fletcher (and another ), Fair Maid of the Inn, ii. 2. Have not I Known him, a common rogue, come fiddling in To the osteria? B. Jonson, Volpone, ii. 3. oste et, n . A Middle English form of hoste . ostia, n. Plural of ostium . ostiarius (os-ti-ā'ri-us), n.; pl. ostiarii (-1). [L.: see ostiary .] Same as ostiary . The Bishop. then washes the feet of all the Priests, beginning from the Ostiarius to the Economus. J. M. Neale , Eastern Church, i. 877. ostiary (os'ti-ā-ri), n.; pl. ostiaries (-riz). [1 and 2. F. ostiaire = Sp. Pg. It. ostiario, IMG:content-1912.png:[blocks in formation] Ostracea (os-trā'sē-ä), n. pl. [NL., neut. pl., ostreaceous. II. n. A member of the Ostracea ; an oyster. Also ostracine . ostraceous (os-trā'shius), a. [ ὀστράκεος , taken as 'testaceous': see Ostracea .] Same as ostracean . Ostracidæ (os-tras'i-dē), n . pl . [NL., τρακον , a shell, + -ida .] The oyster family. See Ostreidæ . A fish of this genus; an ostraciont. ostraciont (os-trā'si-ont), a. and n. [ II. n. A member of the genus Ostracion or of the family Ostraciontida .