Hydrotropism — Hy*drot ro*pism, n. 1. (Bot.) A tendency towards moisture. [1913 Webster] 2. (Bot.) In a broader sense, any curvature or turning induced in certain growing plant organs under the influence of moisture. Note: When the movement is toward the… … The Collaborative International Dictionary of English
hydrotropism — [hī drä′trə piz΄əm] n. [ HYDRO + TROPISM] the positive, or negative, movement or growth, as of a plant root, toward, or away from, moisture hydrotropic [hī΄drə träp′ik] adj … English World dictionary
positive hydrotropism — Hydrotropism Hy*drot ro*pism, n. 1. (Bot.) A tendency towards moisture. [1913 Webster] 2. (Bot.) In a broader sense, any curvature or turning induced in certain growing plant organs under the influence of moisture. Note: When the movement is… … The Collaborative International Dictionary of English
hydrotropism — The property in growing organisms of turning toward a moist surface (positive h.) or away from a moist surface (negative h.). [hydro + G. tropos, a turning] * * * hy·dro·tro·pism hī drä trə .piz əm; .hī drə trō .piz əm, trä n a tropism in which… … Medical dictionary
hydronegative — | ̷ ̷ ̷ ̷ at hydro + adjective Etymology: hydr + negative : characterized by negative hydrotaxis or hydrotropism … Useful english dictionary
Tropism — A tropism (from Greek, tropos , to turn) is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the… … Wikipedia
Chemotropism — is growth of organisms (or parts of organism) such as bacteria and plants, navigated by chemical stimulus from outside of the organism. The response by the plant is termed ‘positive’ if the growth is towards the stimulus or ‘negative’ if the… … Wikipedia
