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nonperiodic

nonperiodic

7.6
Happening at irregular times
  • adjective
  • /nɒnˈpɪəriədɪk/
translation icon : no periódico
  • Figure 5. Coherent diffraction imaging, in combination with iterative phasing methods, can solve the structures of nonperiodic samples.
  • nonperiodic structures
  • nonperiodic patterns

Examples

  • New techniques are constantly being developed, including some that will allow scientists to map out such nonperiodic materials as cells.

    Academic text (2006)
  • Scientists know surprisingly little about the structure of many nonperiodic materials that make up our world, especially in the 10- to 1000-nm regime.

    Academic text (2012)
  • Nonperiodic specimens.

    Academic text (2006)
  • Scientists study nonperiodic structures to understand how they differ from regular patterns.

  • The artist's work featured nonperiodic designs that captivated the audience with their uniqueness.

  • Nonperiodic events, like earthquakes, can happen at any time without a predictable schedule.

Synonyms

sporadic
vsnonperiodic
35 7.0

Happening sometimes and in different places

focuses on irregular timing rather than being scattered in place
intermittent
vsnonperiodic
35 6.5

Happening sometimes but not all the time

refers to irregular timing without implying lack of continuity
irregular
vsnonperiodic
27 3.5

Happening at no fixed times

focuses specifically on timing rather than general lack of pattern
episodic
vsnonperiodic
3 7.1

Happening only sometimes and not regularly

describes irregular timing generally rather than discrete separate episodes
aperiodic
vsnonperiodic
  • Specialized
8.2

Does not happen at regular times or repeat a pattern

is identical in meaning but formed with a different negative prefix
noncyclical
vsnonperiodic
7.2

Not happening in regular cycles

emphasizes irregular timing rather than absence of cycles
nonrepetitive
vsnonperiodic
6.1

That does not happen again in the same way or pattern

focuses on irregular timing rather than general lack of repetition
nonoscillatory
vsnonperiodic
  • Specialized
9.9

Having no repeating movement or vibration

refers to irregular timing rather than absence of physical oscillation

Antonyms

47 3.9

Happens again at regular times

How Irregular

erratic
94 6.1
nonperiodic
7.6
irregular
27 3.5
sporadic
35 7.0
intermittent
35 6.5

Surface Forms

nonperiodic positive

Morphology

nonperiodic = periodic (transparent) = non + period + ic

The prefix 'non-' simply negates the adjective 'periodic', a regular and productive formation clear to learners.

Etymology

Nonperiodic breaks into non- meaning 'not' and periodic, from period meaning 'a regular time or cycle'. So nonperiodic describes something that does not happen or repeat at regular times, which is why we call some earthquakes or irregular patterns nonperiodic.