(chemistry) A notation indicating the number of atoms of each element present in one molecule of a substance.

(uncountable) The state of being formal. / Something said or done as a matter of form. / A customary ritual without new or unique meaning.

(programming) An abstract representation, typically including a name and a type, of a parameter expected to be passed to a method or function.

A solution of formaldehyde in water; used as a disinfectant and to preserve biological specimens.

at some time in the past / previously; once

Causing fear, dread, awe, or discouragement as a result of size, strength, or some other impressive feature; commanding respect; causing wonder or astonishment. / Difficult to defeat or overcome.

(organic chemistry) The simplest carboxylic acid, HCOOH, a colourless, corrosive liquid with a sharp odour; it is present in the stings of ants, bees and nettles, and is prepared industrially by the oxidation of methanol or formaldehyde; it has some industrial uses, and its esters, the formates are used in perfumes.

A plastic laminate material.

Occurring, undertaken, or performed as a perfunctory matter, in the interest of form, or for the sake of formality. / Of or relating to a document of form, especially an invoice sent in advance.

Undertaken or performed as a perfunctory matter, in the interest of form, or for the sake of politeness.