Adventitious Ad`ven*ti"tious, a. [L. adventitius.] 1. Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign. [1913 Webster]

To things of great dimensions, if we annex an adventitious idea of terror, they become without comparison greater. --Burke. [1913 Webster]

2. (Nat. Hist.) Out of the proper or usual place; as, adventitious buds or roots. [1913 Webster]

3. (Bot.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants. [1913 Webster]

4. (Med.) Acquired, as diseases; accidental. [1913 Webster] -- {Ad`ven*ti"tious*ly}, adv. -- {Ad`ven*ti"tious*ness}, n. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • adventitious — [ad΄ven tish′əs, ad΄vəntish′əs] adj. [L adventicius, coming from abroad: see ADVENT] 1. added from outside; not inherent; accidental 2. occurring in unusual or abnormal places [adventitious roots growing on a stem] SYN. ACCIDENTAL adventitiously… …   English World dictionary

  • adventitious — adventitious. См. придаточный. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • adventitious — I adjective accidental, acquired, casual, circumstantial, external, extraneous, extrinsic, extroverted, foreign, fortuitous, incidental, outward, outward looking, random, subordinate, subsidiary, transcendent, unintentional, unwitting II index… …   Law dictionary

  • adventitious — (adj.) of the nature of an addition from without, c.1600, from M.L. adventitius coming from abroad, extraneous, a corruption of L. adventicius foreign, strange, accidental, from advent pp. stem of advenire arrive (see ADVENT (Cf. advent)).… …   Etymology dictionary

  • adventitious — *accidental, incidental, fortuitous, casual, contingent Analogous words: acquired (see GET): accessory, subservient (see AUXILIARY) Antonyms: inherent Contrasted words: constitutional, essential, intrinsic, ingrained (see INHERENT): *innate,… …   New Dictionary of Synonyms

  • adventitious — ► ADJECTIVE 1) happening according to chance. 2) Botany (of roots) growing directly from the stem or other upper part of a plant. DERIVATIVES adventitiously adverb. ORIGIN Latin adventicius coming to us from abroad …   English terms dictionary

  • Adventitious — Coming from an external source or occurring in an unusual place or manner. Not inherent, inherited or innate but rather occurring accidentally or spontaneously. When a doctor or nurse auscults (listens to) the chest or abdomen, adventitious… …   Medical dictionary

  • adventitious — adjective Etymology: Latin adventicius Date: 1603 1. coming from another source and not inherent or innate < a Federal house without adventitious later additions > 2. arising or occurring sporadically or in other than the usual location …   New Collegiate Dictionary

  • adventitious — accidental, occurring at an unusual locality, as in an adventitious visitor …   Dictionary of ichthyology

  • adventitious — adjective /ˌæd.vɛnˈtɪʃ.əs,ˌæd.vənˈtɪʃ.əs/ a) From an external source; not innate or inherent, foreign. The Velloziaceae have evolved a woody stem which is covered with a layer of adventitious roots mingled with the fibres of the old leaf sheaths; …   Wiktionary

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