patent office/ʹpayt(ə)nt, ʹpat(ə)nt/ noun

• trigon
• trigonal
• trigonometric
• trigonometric function
• trigonometry
• trig point
• trigram
• trigraph
• trihedron
• trihydric
• trike
• trilateral
• trilby
• trilinear
• trilingual
• trilith
• trilithon
• trill
• trillion
• trillium
• trilobite
• trilogy
• trim
• trimaran
• trimer