2H (English, noun)
expansion: 2H (usually uncountable, plural 2Hs)
Senses:
glosses: A grade of pencil with lead that makes lighter marks than a pencil grade H but darker marks than a pencil of grade 3H; a pencil with hard lead.
tags: British
uncountable
usually
glosses: A pencil of grade 2H.
tags: uncountable
usually
glosses: deuterium. In this case, the "2" should be superscripted: ²H.
tags: uncountable
usually
Forms:
form: 2Hs
tags: plural