SVUSD – Grade 4 Lesson 32 Latin Roots: vid/vis Generalization: Root words are parts of Latin and Greek words. In English they do not stand on their own as independent words; they are always preceded or followed (or both) by affixes. Spelling, syllabication, and derivational generalizations are used when adding prefixes and suffixes to roots. vid/vis = to see, to look at Note: Base words are elements that can be used to build words by adding affixes but are also complete words in themselves (power, powerful, powerless). vid vis evident evidence provide video videocassette videotape visa vista visit visitation advise visible vision visor visual invisible provision revise revision supervise television envision