(art) A full length portrait.

A distance approximately equal to the length of a human's arm. / (figuratively) A position not suggesting or inviting intimacy.

(literally) Barely within reach. / (idiomatic) Distant, detached. / (idiomatic) Independent, but related.

(nautical) Length of a ship from bow to stern.

plural of commutator length

The number of multiplicands needed, at a minimum, to express a given group element as a product of commutators.

plural of focal length

(physics) A unit of length, believed to be the smallest length that has physical meaning, that is defined in terms of the speed of light, the gravitational constant and the reduced Planck's constant, namely: ℓ_P=√hbar Gc³≈1.616 252(81)⨯10⁻³⁵ mbox meters

plural of cable length

(physics) A particular length or distance whose value is determined to one order of magnitude (or to very few orders of magnitude)