a wheeled vehicle that has two wheels and is moved by foot pedals | (mathematics) the sum of a finite or infinite sequence of expressions |
a single complete execution of a periodically repeated phenomenon | a periodical that appears at scheduled times |
a periodically repeated sequence of events | a serialized set of programs |
a series of poems or songs on the same theme | (sports) several contests played successively by the same teams |
an interval during which a recurring sequence of events occurs | similar things placed in order or happening one after another |
the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) | a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection |
| (electronics) connection of components in such a manner that current flows first through one and then through the other |