vec

Symbol

 * 1)  vectorization (of a matrix)
 * $$\mathrm{vec}(A) = [a_{1,1}, ..., a_{m,1}, a_{1,2}, ..., a_{m,2}, ..., a_{1,n}, ..., a_{m,n}]^T$$

Etymology
From.

Noun

 * 1)  concern
 * 2)  use, usefulness, utility, benefit
 * 1)  use, usefulness, utility, benefit

Usage notes

 * Never occurs uninflected. Only used as part of expressions and derived terms below.

Etymology
.

Noun

 * 1) thing
 * 2) business something involving one personally