vitamin B₇ or biotin. / (medicine, slang) Haloperidol.

In the United States, a youth organization administered by the Cooperative Extension System of the United States Department of Agriculture with the mission of "engaging youth to reach their fullest potential while advancing the field of youth development."

A report containing a patient's medical history and the results of his/her physical exam.

plural of H-bomb

(phonology) The prothesis of the sound /h/ to words beginning with a vowel, especially as found in Celtic languages such as Irish and Welsh, and in dialects of English, especially those that pronounce h weakly.

plural of H-hour

(French phonology) In the French language, usage of the letter h at the start of a word which does not allow liaison with a preceding consonant or elision of a preceding schwa.

(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).