change in outward structure or looks; "He transformed into a monster"; "The salesman metamorphosed into an ugly beetle"
increase or decrease (an alternating current or voltage)
change (a bacterial cell) into a genetically distinct cell by the introduction of DNA from another cell of the same or closely related species
convert (one form of energy) to another; "transform energy to light"
change or alter in form, appearance, or nature; "This experience transformed her completely"; "She transformed the clay into a beautiful sculpture"; "transubstantiate one element into another"
a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations; "in England they call a period a stop"
the end or completion of something; "death put a period to his endeavors"; "a change soon put a period to my tranquility"
a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods"
one of three periods of play in hockey games
the interval taken to complete one cycle of a regularly repeating phenomenon
a stage in the history of a culture having a definable place in space and time; "a novel from the Victorian period"