| A | B |
| tele | far |
| telecommunication | communicating sounds, signals or pictures by wire or radio |
| telegraph | sending coded messages through a transmitter to a receiver |
| telephoto | a magnifying camera lens used to photograph distant objects |
| telescope | optical instrument that makes far away objects seem closer and larger |
| teletypewriter | a form of a telegraph wherein messages are automatically typed on the receiving end |
| terra | earth, ground |
| terrace | an open outdoor living area connected to a house |
| terrain | land |
| terrarium | a glass enclosure for small land animals or plants |
| terrestrial | having to do with earth or land |
| territory | any land controlled by a particular nation or ruler |
| un | not |
| undesirable | not pleasant; objectionable |
| unearned | not gained by work or service; not deserved |
| unequal | not the same extent, rank or ability |
| unforgettable | never to be forgotten |
| unproductive | producing very little |
| unqualified | not having the necessary qualifications desired |
| vis | to look, to see |
| invisible | cannot be seen |
| revise | to read over carefully, then correct or improve as needed |
| visor | the front brim of a hat that shades the eyes |
| vista | a view |
| visualize | to form a mental image of something |