Periodic Per`i*od"ic, a. [Pref. per- + iodic.] (Chem.) Pertaining to, derived from, or designating, the highest oxygen acid (HIO?) of iodine. [1913 Webster]

The Collaborative International Dictionary of English. 2000.


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  • Periodic — Pe ri*od ic, Periodical Pe ri*od ic*al, a. [L. periodicus, Gr. ?: cf. F. p[ e]riodique.] 1. Of or pertaining to a period or periods, or to division by periods. [1913 Webster] The periodicaltimes of all the satellites. Sir J. Herschel. [1913… …   The Collaborative International Dictionary of English

  • periodic — PERIÓDIC, Ă, periodici, ce, adj. 1. Care revine, care se repetă (regulat) după anumite intervale de timp (egale); care constă în parcurgerea repetată a aceleiaşi succesiuni de stări (în intervale de timp egale). ♢ Publicaţie periodică (şi… …   Dicționar Român

  • periodic — periodic, periodical Periodic is an adjective only, and although once largely restricted to technical and scientific contexts (e.g. periodic decimal, periodic function, and periodic table), it has become commoner in non technical usage as well… …   Modern English usage

  • periodic — [pir΄ē äd′ik] adj. [MFr periodique < L periodicus < Gr periodikos] 1. occurring, appearing, or recurring at regular intervals [a periodic fever] 2. occurring from time to time; intermittent 3. of or characterized by periods [the periodic… …   English World dictionary

  • periodic — I adjective cadenced, cadent, continual, cyclic, cyclical, erratic, fluctuating, frequent, habitual, intermittent, measured, occasional, occurring again, oft repeated, oftentime, patterned, perpetual, reappearing, recurrent, recurring, regular,… …   Law dictionary

  • periodic — (adj.) 1640s, from Fr. périodique (14c.), from L. periodicus, from periodus (see PERIOD (Cf. period)). Periodic table in chemistry is from notion of the arrangement, in which similar properties recur at intervals in elements in the same area as… …   Etymology dictionary

  • periodic — *intermittent, recurrent, alternate Analogous words: *fitful, spasmodic, convulsive: sporadic, occasional (see INFREQUENT) …   New Dictionary of Synonyms

  • periodic — [adj] at fixed intervals alternate, annual, at various times, centennial, cyclic, cyclical, daily, epochal, every once in a while, every so often, fluctuating, hourly, infrequent, intermittent, isochronal, isochronous, monthly, occasional, on… …   New thesaurus

  • periodic — ► ADJECTIVE ▪ appearing or occurring at intervals. DERIVATIVES periodicity noun …   English terms dictionary

  • periodic — periodic1 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… …   Universalium

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