1. A numeral or string of numerals that is used for identification
   - number

Type of: positive identification

• irredeemably
• irredenta
• irredentism
• irredentist
• irreducible
• irreducibly
• irrefragable
• irrefutable
• irrefutably
• irregardless
• irregular
• irregularity
• irregularly
• irrelative
• irrelevance
• irrelevancy
• irrelevant
• irrelevantly
• irreligion
• irreligionist
• irreligious
• irreligiousness
• irremediable
• irremediably
• irremissible