axial (aksial)

[ From central development we pa insensibly to that higher kind of development for which axial seems the most appropriate name. H. Spencer , Prin. of Biol., § 50. 2. Situated in an axis or in the axis.-3. In an at ., pertaining to the somatic as distinguished from the membral portions of the body; not appendicular. Axial parts or organs are, in general, divided into epaxial , hypaxial , and paraxial , according as they are situated over, under, or alongside the spinal column. 4. In geol., forming the axis, central dominating portion, or crest of a mountain-range. Section of mountain showing anticlinal structure with axial ma of eruptive or metamorphic rock. The central or axial portions of many mountain-ranges consist of crystalline, azoic, or archæan rocks; this is especially true of the numerous ranges of the North American Cordilleras. Sometimes axal . Axial canal, in crinoids, the central canal within the hard perisoma of the stem, extending the length of the latter and filled with a soft solid substance. - Axial cavity, in Actinozoa, the cavity common to the gastric sac and inter mesenteric chambers. See Actinozoa. - Axial circle, a circle having its center on the axis of a curve.Axial line, the name given by Faraday to the line in which the magnetic force pa es from one pole of a horseshoe magnet to the other. Axial plane, in crystal., a plane containing (1) two of the crystallographic axes, or (2) the optic axes in the case of a biaxial crystal. - Axial rotation, rotation upon an axis. - Axial skeleton, the skeleton of the trunk and head and tail, as distinct from the skeleton of the limbs. axially (ak'si-al-i), adv. In a line with or in the direction of the axis; with reference to the axis. There are many Transparent Objects, however, whose peculiar features can only be made out when they are viewed by light transmitted through them obliquely instead of axially . W. B. Carpenter , Micros., § 145. axiferous (ak-sif'e-rus), a. [L. axis, axis, + ferre = E. bear1.] In bot., consisting of an axis only, without leaves or other appendages: applied by Turpin to fungi and algæ, considered as consisting e entially of an axis merely. axiform (ak'si-form), a. [L. axis, axis, + among the Arabs and Moors. Axes of various kinds of form a, shape.] In the form of an axis. stone, or entirely of copper or bronze, are found among axifugal (ak-sif'u-gal), a. [ IMG:content-1485.png:[blocks in formation] fugere, flee, + -al.] Centrifugal. [Rare.] axil (ak's il), n. [L. axilla, dim. (cf. ala for * axla, dim.) of axis, axis, armpit: see ala, aisle, axis1, and axle.] 1. The arm pit, or axilla (which see). [Rare.]-2. In bot., the angle formed between the upper side of a leaf and the stem or branch to which it is attached; in cryptogams, the angle formed by the branching of a frond. a , a , Axils. axile axile (ak's il), a. [ A large sinus, which separates the axile portion of the stem of the proboscis from its investing coat. Huxley , Anat. Invert., p. 555. 3. In zoöl., axial, with reference to ovarian organs or ova: opposed in this sense to periph eral. This ma becomes differentiated into an axile cord of protoplasmic substance, the rhachis, and peripheral ma es, which are the developing ova. Huxley, Anat. Invert., p. 548. axilla (ak-sil'ä), n.; pl. axilla (-ē). [L.: see axil.] In an at ., the armpit; a region of the body in the rece between the upper arm (or in birds the upper part of the wing) and the side of the chest beneath the shoulder. It is pyramidal in shape, its apex corresponding to the interval between the scaleni muscles opposite the first rib. Axilla thermometer, a clinical thermometer: so named because it is placed in the axilla in observing the temperature of a person. axillant (ak-sil'ant); a. [ For him the tree is a colony of phytons, each being a bud with its axillant leaf and fraction of the stem and root. Encyc . Brit ., XVI. 841.