Definitions of axis

  1. the main stem or central part about which plant organs or plant parts such as branches are arranged
  2. the center around which something rotates
  3. the 2nd cervical vertebra; serves as a pivot for turning the head
  4. a straight line through a body or figure that satisfies certain conditions
  5. The spotted deer ( Cervus axis or Axis maculata) of India, where it is called hog deer and parrah ( Moorish name).
  6. A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are symmetrically arranged.
  7. A straight line with respect to which the different parts of a magnitude are symmetrically arranged; as, the axis of a cylinder, i. e., the axis of a cone, that is, the straight line joining the vertex and the center of the base; the axis of a circle, any straight line passing through the center.
  8. The stem; the central part, or longitudinal support, on which organs or parts are arranged; the central line of any body.
  9. The second vertebra of the neck, or vertebra dentata.
  10. Also used of the body only of the vertebra, which is prolonged anteriorly within the foramen of the first vertebra or atlas, so as to form the odontoid process or peg which serves as a pivot for the atlas and head to turn upon.
  11. One of several imaginary lines, assumed in describing the position of the planes by which a crystal is bounded.
  12. The primary or secondary central line of any design.
  13. The spotted deer ( Cervus axis or maculata) of India, where it is called hog deer and parrah ( Moorish name).
  14. The motionless straight line, real or imaginary, passing through a body, upon which such a body revolves, or is supposed to revolve; as, the earth turns on its axis.
  15. The axle, or the line, real or imaginary, on which a body revolves.
  16. The line on which a body revolves.
  17. A line on which something rotates, or any central line or pivotal point.
  18. The line, real or supposed, round which anything revolves.
  19. The main stem or central cylinder; the fundamentally central line of a structure; the second cervical vertebra.
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