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 straight line, real or imaginary, round which a body revolves; a straight line in a plain figure, about which it revolves to produce a solid; a right line dividing the section into two equal parts, and cutting all its ordinates at right angles; the second vertebra of the neck, with an upward process on which the atlas turns; the central part or column of a plant, around which the other parts are disposed; a particular ray of light from any object falling perpendicularly on the eye, called also the optic or visual axis. The axis of a balance, that line about which it turns; The axis of oscillation, a right line parallel to the horizon, about which a pendulum vibrates; the axis in peritrachio, or wheel and axis, one of the mechanical powers, consisting of a wheel concentric with a cylindrical axis, with which it revolves.
  19. The line, real or supposed, round which anything revolves.
  20. The main stem or central cylinder; the fundamentally central line of a structure; the second cervical vertebra.

Usage examples for axis

  1. Thus, if a cone be cut by a plane at right angles to its axis we get a circle. – Essays: Scientific, Political, & Speculative, Vol. I by Herbert Spencer
  2. In the first place the earth actually revolves on its axis in twenty- three hours, fifty- six minutes, and four seconds. – Christopher and the Clockmakers by Sara Ware Bassett
  3. A new view of the heavens has quietly come, for the earth's axis has changed its place. – Memoir and Letters of Francis W. Newman by Giberne Sieveking
  4. Through its centre passes an iron axis, with a handle at each end. – Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson by Thomas Jefferson
  5. It is not difficult to see that the axis of perspectivity m is the line joining B' and C. Given any point D on u, to find the corresponding point D' on u' we proceed as follows: Join D to S and note where the joining line meets m. – An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman
  6. You're as true to the world as the world to its axis, But you chuckle to swear off your personal taxes. – Impertinent Poems by Edmund Vance Cooke
  7. The motion of the earth being northward, that end of its axis resembled the prow of a ship. – The Second Deluge by Garrett P. Serviss
  8. The rest itself holds the tool firmly fixed in it, and slides along the bench in a direction parallel with the axis of the work. – The-Romance-of-Industry-and-Invention by Cochrane, Robert
  9. So swiftly does the revolving world carry our sorrow into the sun, our mirth into the shade, that it is as if the speed of the planet had caught something of the impatience of age, and it were hurried round upon its axis with the quickened pulses of senility. – English Society by George Du Maurier
  10. This arrangement altered the position of the stairs, and stairs and hall became the central axis of the house. – Remodeled Farmhouses by Mary H. Northend
  11. Let us return to the Sirex, reduced by abstraction to its axis. – The Glow-Worm and Other Beetles by Jean Henri Fabre
  12. The anteroposterior measurements of the skull all were taken along the shortest line between the points specified below and are not necessarily along a line parallel to the long axis of the skull. – Subspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and Colorado by Sydney Anderson
  13. It had long been believed that that tremendous accumulation unbalanced the globe and was the principal cause of the unsteadiness of the earth's axis of rotation. – The Second Deluge by Garrett P. Serviss
  14. The round earth rolls upon its axis, and that makes the moon seem to rise higher and higher, and then sink away below the western horizon. – Uncle Robert's Geography (Uncle Robert's Visit, V.3) by Francis W. Parker and Nellie Lathrop Helm