1. A fee for instruction, especially at a formal institution of learning.
2. Instruction; teaching.
3. Archaic. Guardianship.

[Middle English tuicion, protection, from Old French, from Latin tuitiō, tuitiōn-, from tuitus, past participle of tuērī, to protect.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.