from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Articulated with relatively strong pressure of the airstream below the glottis, as in English (p) and (t) compared with (b) and (d).
- n. A fortis consonant.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. strongly articulated (of a consonant), hence voiceless
Latin, strong; see fort.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin fortis ("strong"). (Wiktionary)