Meaning of PERIODIC in English


periodic 1

— periodically , adv.

/pear'ee od"ik/ , adj.

1. recurring at intervals of time: periodic revivals of an interest in handicrafts.

2. occurring or appearing at regular intervals: periodic visits of a mail steamer to an island.

3. repeated at irregular intervals; intermittent: periodic outbreaks of the disease.

4. Physics. recurring at equal intervals of time.

5. Math. (of a function) having a graph that repeats after a fixed interval (period) of the independent variable.

6. Astron.

a. characterized by a series of successive circuits or revolutions, as the motion of a planet or satellite.

b. of or pertaining to a period, as of the revolution of a heavenly body.

7. pertaining to or characterized by rhetorical periods, or periodic sentences.

[ 1635-45; periodicus periodikós. See PERIOD, -IC ]

periodic 2

/perr'uy od"ik/ , adj. Chem.

of or derived from a periodic acid.

[ 1830-40; PER- + IODIC ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .