The visual illusion in which outward pointing arrowheads at the end of a line decrease its apparent length, and inward pointing ones increase it, compared to a neutral line of the same length.
- tympanic cavity
- tympanum
- Tyndale, William (1494–1536)
- Tyndall effect
- Tyndall, John
- type
- type 0, 1, 2, 3 language
- Type 1 font
- Type 3 font
- type A and B metals
- typeahead
- type A metal
- type area
- type B metal
- Type I
- type I and II errors
- Type I earthquake source
- Type I error
- type I fibre
- Type II earthquake source
- Type II error
- type II fibre
- type-insensitive code
- type locality
- type section