6H (English, noun)
expansion: 6H (usually uncountable, plural 6Hs)
Senses:
glosses: A grade of pencil with lead that makes lighter marks than a pencil grade 5H; a pencil with extremely hard lead.
tags: British
English
uncountable
usually
glosses: A pencil of grade 6H.
tags: uncountable
usually
Forms:
form: 6Hs
tags: plural