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periodic

periodic

47 3.9
Happens again at regular times
  • adjective
  • /ˌpɪrɪˈɑdɪk/
translation icon : periódico
  • Happily, for many known pulsars, the frequency of such periodic signals lies within LIGO's sensitivity band.
  • a periodic meeting
  • a periodic review
  • periodic reports

So when I started crystals like this where periodic, they continue in all directions.

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Examples

  • Do you suffer from periodic headaches?

  • Averaged across years of data, this reveals periodic patterns, including seasons.

  • But why would dark matter create a periodic annual signal?

  • So this is a feature of the periodic setting.

  • And the pattern has this almost periodic character to it.

  • This is due to periodic air pockets.

  • So one way to tell that the binary exists is to look for periodic variation of the light.

  • All recipients return to the hospital for periodic follow-ups and often drop in on group meetings.

    Academic text (1990)
  • The United States always overcame its periodic economic downturns, even the Great Depression.

    Academic text (2008)
  • The train makes a periodic stop at the station every hour.

Synonyms

regular
vsperiodic
870 1.0

Happening at fixed times on a schedule

focuses on repeating at steady time gaps rather than routine
rhythmic
vsperiodic
42 3.6

Having a regular pattern of sounds or movements

focuses on repetition by time spacing rather than musical pattern
cyclical
vsperiodic
28 5.1

Happening again and again at regular times

describes repetition by pattern cycles rather than simple timing
recurrent
vsperiodic
12 4.7

Happening again and again, often at regular times

highlights repetition at steady time gaps rather than general repeat
cyclic
vsperiodic
5 4.8

Happens repeatedly in a regular pattern

emphasizes steady timing rather than the shape of the pattern
periodical
vsperiodic
3 4.4

Happening at regular times

is a general term for events that repeat at steady times
rhythmical
vsperiodic
1 3.9

Happening with a steady, regular beat like music or movement

refers to simple time-based repetition rather than beat or flow
isochronous
vsperiodic
  • Specialized
9.9

Happening at equal time intervals

means repetition at steady times but not exact equality
recurring
vsperiodic
3.3

Happens again and again over time

specifies repetition that occurs at steady, scheduled times

Antonyms

27 3.5

Happening at no fixed times

aperiodic
  • Specialized
8.2

Does not happen at regular times or repeat a pattern

Compounds

periodic table
  • Specialized
9 3.5

A chart that shows all chemical elements by their atomic number and groups similar ones together

periodic breathing
  • Specialized
6.7

Repeated cycles of shallow and deep breaths

periodic edema
  • Specialized
7.0

Sudden, repeated swelling under the skin that goes away within one day

An event that happens again at regular times

periodic law
  • Specialized
6.5

Properties of elements repeat when they are put in order by atomic number

periodic motion
  • Specialized
4.1

Movement that repeats at regular times, with each cycle taking the same amount of time

periodic movement
  • Specialized
6.1

Motion that repeats at regular times, like a swinging pendulum

periodic acid
  • Specialized
7.3

An iodine acid in crystals that adds oxygen to other chemicals

Newborn babies breathe quickly and then stop for short times

periodic sentence
  • Literature
9.3

A sentence that puts the main idea at the end after other clauses

How Often

constant
198 2.5
frequent
234 1.0
regular
870 1.0
periodic
47 3.9
occasional
285 2.8
sporadic
35 7.0

Surface Forms

periodic positive
periodical positive

Morphology

periodic = period (transparent) = period + ic

The adjective is a regular formation from the noun 'period' with the productive suffix '-ic' meaning 'relating to or characterized by intervals', so the meaning is directly derivable.

Etymology

Periodic comes from the word period, which comes from Greek parts peri- meaning 'around' and hodos meaning 'way'. So the image is something going around and coming back, and periodic describes things that happen again and again at regular times.