(phonology) In the French language usage of the letter h at the start of a word which allows liaison with a preceding consonant.

Spoken form of ℏ, reduced Planck's constant.

Initialism of hot and cold (water).

Initialism of postage, processing and handling.

(Internet slang) Abbreviation of hat tip.

(Internet slang, text messaging) Abbreviation of hold on.

A selective service class denoting that the registrant is not currently subject to induction processing.

Alternative form of aitchbone

Alternative letter-case form of h/c.

Initialism of hot and cold (water).