the father of Abraham / (very rare) A male given name from Hebrew

A unit of measurement based on one trillion hertz. / One trillion hertz, 10¹² Hz.

(engineering) Electromagnetic waves with frequencies around one terahertz. / (engineering) Especially electromagnetic waves in the range 0.1-30 THz (or subranges there of, see T-rays or T-waves).

plural of terahash

(computing, cryptocurrencies) A trillion (10¹²) hashes.