English Explanatory Dictionary

3H

English dictionary entry

Meanings

noun
  1. A grade of pencil with lead that makes lighter marks than a pencil grade 2H but darker marks than a pencil of grade 4H; a pencil with hard lead.
  2. A pencil of grade 3H.
  3. tritium. In this case, the "3" should be superscripted: ³H.

Word forms

3H 3Hs
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