tria - type
- trial impression
- trial line
- trial print
- trial sheet
- triangle
- triangle dot
- triangular dots
- triboelectric magnetic toner
- triboelectrification
- trichromat
- trichromatic edition
- trichromatic ink
- trichrome Carbro
- tricolor filters
- tried-and-true titles
- trigger
- trim
- trim area
- trim margin
- trim mark
- trim sealer
- trim size
- trim the slug on the bottom
- trimensual
- trimestrial
- trimmed brochure
- trimmed flush book
- trimmed paper-page size
- trimmed signature
- trimmer
- trimmer path indicator
- trimmer-stitcher
- trimming
- trimming for work-and-tumbler forms
- trimming knife
- trimming machine
- trimonthly
- trioxymethylene
- trip
- trip cam
