Color Names

Ceil

The pale grey overhead, in code and in drywall.

#92a1cf

Ceil is a muted grey, close to blue.

It can be described as muted, dull, matte and soft.

Set in black, because black reads best on it.

Ceil

Floor and ceiling functions

In mathematics, the floor function is the function that takes a real number x as input and returns the greatest integer less than or equal to x, written ⌊x⌋ or floor(x). Similarly, the ceiling function returns the least integer greater than or equal to x, written ⌈x⌉ or ceil(x).

Read on Wikipedia

ceil

Symbol

  1. ceiling function

Verb

  1. To line or finish (a surface, such as a wall), with plaster, stucco, thin boards, or similar.
Wiktionary