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单词 periodic table
释义

period /pēˈri-əd/

noun
  1. A stretch of time
  2. A long stretch, an age
  3. One of the main divisions of geological time
  4. A stage or phase in history, in a person's life and development, in a disease, or in any course of events
  5. A time
  6. A division of the school day, the time of one lesson
  7. The end of a course
  8. A recurring time
  9. The menstrual discharge or the time when it occurs
  10. The time in which anything runs its course
  11. An interval of time at the end of which events recur in the same order
  12. The time required for a complete oscillation, reciprocal of the frequency
  13. The time of a complete revolution of a heavenly body about its primary
  14. The difference between two successive values of a variable for which a function has the same value (mathematics)
  15. The recurring part of a circulating decimal (mathematics)
  16. A set of figures (usu three) in a large number marked off eg by commas
  17. A series of chemical elements represented in a horizontal row of the periodic table
  18. An end (rare)
  19. A goal (archaic)
  20. A complete sentence, esp one of elaborate construction
  21. A division analogous to a sentence (music)
  22. (in pl) rounded rolling rhetoric
  23. A mark (.) at the end of a sentence, a full stop (the word is sometimes added at the end of a sentence to emphasize the finality of the statement)
  24. A rhythmical division in Greek verse
adjective

(of eg architecture, furniture or a play) characteristic, representative, imitative of, belonging to or dealing with a past period

transitive verb (Shakespeare)

To put an end to

ORIGIN: Fr période, from L periodus, from Gr periodos, from peri around, and hodos a way

periodic /pēr-i-odˈik/ adjective

  1. Relating to a period or periods
  2. Of revolution in an orbit
  3. Having a period
  4. Recurring regularly in the same order
  5. (loosely) occurring from time to time
  6. Characterized by or constructed in periods
  7. Relating to the periodic table
  8. Relating to periodicals (rare)

periodˈical adjective

  1. Periodic
  2. Published in numbers at more or less regular intervals
  3. Of, for, or in such publications
noun

A magazine or other publication that appears at stated intervals (not usu including newspapers)

periodˈicalist noun

A person who writes in a periodical

periodˈically adverb

  1. At regular intervals
  2. In a periodic manner
  3. In a periodical publication
  4. (loosely) from time to time

periodicity /-disˈ/ noun

  1. The fact or character of being periodic
  2. Frequency

periodīzāˈtion or periodīsāˈtion noun

Division into periods

pēˈriodize or pēˈriodise transitive verb

periodical cicada noun

An American cicada whose nymphs reach adulthood after seventeen years (also seventeen-year locust)

periodic function noun (mathematics)

One whose values recur in a cycle as the variable increases

periodic law noun

The principle that the properties of atoms are periodic functions of their atomic numbers

periodic sentence noun

A sentence constructed in such a way that it is not until the final clause that the requirements of sense and grammar are met

periodic system noun

The classification of chemical elements according to the periodic law

periodic table noun

A table of chemical elements in order of atomic number arranged in horizontal series and vertical groups, showing how similar properties recur at regular intervals

periodic wind noun

A wind which blows at or for a certain period, eg a trade wind, a monsoon, a land breeze, a sea-breeze

period of grace noun

A specific time allowed to both parties to a contract to fulfil any obligations arising from that contract

period piece noun

  1. An object belonging to a past age esp with charm or value
  2. A person ludicrously behind the times
  3. A play, novel, etc, set in a past time

the period

The current age, or age in question

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更新时间:2024/12/22 19:13:21