# T-ray

> English word · Noun · IPA /ˈtiːˌɹeɪ/

## Definitions
1. An electromagnetic wave with a frequency intermediate between, and sharing the properties of, short radio waves and long infrared waves, generally in the 0.1 to 10 terahertz (THz) band of frequencies.

## Etymology
Initialism of t(erahertz) + ray, modelled after X-ray. The term was coined in Bell Labs in the United States in the mid-1990s.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/t-ray