| radiary | <zoology> A radiate. Origin: Cf. F. Radiaire. Source: Websters Dictionary (01 Mar 1998) |
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| radiata | <zoology> An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere. It includes the coelenterates and the echinoderms. Formerly, the group was supposed to be a natural one, and was considered one of the grand divisions of the animal kingdom. Origin: NL, fr. Radiatus, p. P. See Radiate. Source: Websters Dictionary (01 Mar 1998) |
| radiate | 1. To emit rays; to be radiant; to shine. "Virtues shine more clear In them [kings], and radiant like the sun at noon." (Howell) 2. To proceed in direct lines from a point or surface; to issue in rays, as light or heat. "Light radiates from luminous bodies directly to our eyes." (Locke) Origin: L. Radiatus, p. P. Of radiare to furnish with spokes or rays, to radiate, fr. Radius. See Radius, Ray a divergent line. 1. To emit or send out in direct lines from a point or points; as, to radiate heat. 2. To enlighten; to illuminate; to shed light or brightness on; to irradiate. 1. Having rays or parts diverging from a center; radiated; as, a radiate crystal. 2. <botany> Having in a capitulum large ray florets which are unlike the disk florets, as in the aster, daisy, etc. 3. <zoology> Belonging to the Radiata. Origin: L. Radiatus, p. P. <zoology> One of the Radiata. Source: Websters Dictionary (01 Mar 1998) |
| radiate crown | A fan-shaped fibre mass on the white matter of the cerebral cortex, composed of the widely radiating fibres of the internal capsule; a single layer of columnar cells derived from the cumulus oophorus, which anchor on the pellucid zone of the oocyte in a secondary follicle. Synonym: radiate crown. (05 Mar 2000) |
| radiate layer of tympanic membrane | The connective tissue layer of the tympanic membrane beneath the stratum cutaneum, the fibres of which radiate from the manubrium of the malleus to the peripheral fibrocartilaginous ring of the membrane; absent from the pars flaccida. Synonym: radiate layer of tympanic membrane. (05 Mar 2000) |
| radiate ligament | The radiate, stellate, or anterior costovertebral ligament connecting the head of each rib to the bodies of the two vertebrae with which it articulates. Synonym: ligamentum capitis costae radiatum, ligamentum radiatum, radiate ligament, stellate ligament. (05 Mar 2000) |
| radiate ligament of head of rib | The radiate, stellate, or anterior costovertebral ligament connecting the head of each rib to the bodies of the two vertebrae with which it articulates. Synonym: ligamentum capitis costae radiatum, ligamentum radiatum, radiate ligament, stellate ligament. (05 Mar 2000) |
| radiate ligament of wrist | The ligament that extends from the capitate bone to the scaphoid, lunate, and triquetrum on the palmar side of the wrist. Synonym: ligamentum carpi radiatum. (05 Mar 2000) |
| radiate sternocostal ligaments | Fibres of the articular capsule that radiate from the costal cartilages to the anterior surface of the sternum. Synonym: ligamenta sternocostalia radiata. (05 Mar 2000) |
| radiated | 1. Emitted, or sent forth, in rays or direct lines; as, radiated heat. 2. Formed of, or arranged like, rays or radii; having parts or markings diverging, like radii, from a common center or axis; as, a radiated structure; a radiated group of crystals. 3. <zoology> Belonging to the Radiata. Source: Websters Dictionary (01 Mar 1998) |
| radiately | In a radiate manner; with radiation or divergence from a center. Source: Websters Dictionary (01 Mar 1998) |
| radiatiform | <botany> Having the marginal florets enlarged and radiating but not ligulate, as in the capitula or heads of the cornflower. Source: Websters Dictionary (01 Mar 1998) |
| radiatio | In neuroanatomy, a term applied to any one of the thalamocortical fibre systems that together compose the corona radiata of the cerebral hemisphere's white matter (e.g., optic radiation, acoustic radiation, etc.). Synonym: radiation. Origin: L. (05 Mar 2000) |
| radiatio acustica | The fibres that pass from the medial geniculate body to the transverse temporal gyri of the cerebral cortex by way of the sublentiform part of the internal capsule. Synonym: radiatio acustica. (05 Mar 2000) |
| radiatio corporis callosi | The spreading out of the fibres of the corpus callosum in the centrum semiovale of each cerebral hemisphere. Synonym: radiatio corporis callosi. (05 Mar 2000) |