SECTORING
Etymology
Noun
sectoring (usually uncountable, plural sectorings)
Division into sectors.
Anagrams
• corseting, escorting, recosting
Source: Wiktionary
SECTOR
Sec"tor, n. Etym: [L., properly, a cutter, fr. secare, sectum, to
cut: cf. F. secteur. See Section.]
1. (Geom.)
Definition: A part of a circle comprehended between two radii and the
included arc.
2. A mathematical instrument, consisting of two rulers connected at
one end by a joint, each arm marked with several scales, as of equal
parts, chords, sines, tangents, etc., one scale of each kind on each
arm, and all on lines radiating from the common center of motion. The
sector is used for plotting, etc., to any scale.
3. An astronomical instrument, the limb of which embraces a small
portion only of a circle, used for measuring differences of
declination too great for the compass of a micrometer. When it is
used for measuring zenith distances of stars, it is called a zenith
sector. Dip sector, an instrument used for measuring the dip of the
horizon.
– Sector of a sphere, or Spherical sector, the solid generated by
the revolution of the sector of a circle about one of its radii, or,
more rarely, about any straight line drawn in the plane of the sector
through its vertex.
Source: Webster’s Unabridged Dictionary 1913 Edition