name, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Initialism of total internal reflection. abbreviation, alt-of, initialism
2. 2
   Initialism of total indicator reading. abbreviation, alt-of, initialism

Proper Noun

1. 1
   The fourth solar month of the Persian calendar.
2. 2
   A scribe/writer god, in Hellenistic times identified with the Greek Apollo. Armenian
3. 3
   The Convention on International Transport of Goods Under Cover of TIR Carnets.

Etymology

Etymology 1

From Persian تیر (tir).

Etymology 2

Transliteration of Old Armenian Տիր (Tir), which is related to the Persian month name.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.