axis

UK: ˈæksɪs | US: ˈæksɪs

Definition
  1. n. an imaginary straight line around which an object rotates

  2. n. a fixed reference line for measuring coordinates in geometry

  3. n. a central or principal structure around which something is organized

Structure
ax <axis/pivot>is <noun suffix>
Etymology

axis = ax<axis/pivot> + is<noun suffix>

  • ax (from Latin axis, meaning "axle, pivot, or central line")
  • is (a noun-forming suffix in Latin, often retained in English borrowings)

Etymology Origin:
The word axis traces back to Latin axis, originally referring to the axle of a wheel or the celestial pole. Over time, it expanded to denote any central line of rotation or symmetry. The Latin root is linked to Proto-Indo-European h₂eḱs- ("axis"), reflecting its ancient association with pivotal structures. The term’s geometric and organizational meanings emerged later, preserving the core idea of a central reference.

Examples
  1. The Earth rotates on its axis once every 24 hours.

  2. The x-axis and y-axis intersect at the origin point.

  3. The alliance formed the axis of their political strategy.

  4. The sculpture balanced perfectly on its vertical axis.

  5. The team’s strategy revolved around a single axis of innovation.