Difference between revisions of "Fulcrum"
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'''Fulcrum''', the pivot on which a [[lever]] moves. | '''Fulcrum''', the pivot on which a [[lever]] moves. | ||
==Defiinition== | ==Defiinition== | ||
− | *1. A prop or support; now only spec. in Mech. the point against which a lever is placed to get purchase or upon which it turns or is supported. | + | *1. A prop or [[support]]; now only spec. in Mech. the point against which a [[lever]] is placed to get purchase or upon which it turns or is supported. |
*2. (Chiefly pl.) a. Bot. Accessory organs or appendages of a plant; e.g. bracts, stipules, tendrils, etc. | *2. (Chiefly pl.) a. Bot. Accessory organs or appendages of a plant; e.g. bracts, stipules, tendrils, etc. | ||
− | :b. Ichth. (pl.) The small osseous scales arranged in a row and situated on the anterior ray of the fins of many ganoid fishes. | + | :b. Ichth. (pl.) The small osseous scales arranged in a row and situated on the anterior [[ray]] of the fins of many ganoid fishes. |
:c. Zool. The stem or median part of the incus of the mastax of certain rotifers. | :c. Zool. The stem or median part of the incus of the mastax of certain rotifers. |
Latest revision as of 12:15, 19 May 2010
Fulcrum, the pivot on which a lever moves.
Defiinition
- 1. A prop or support; now only spec. in Mech. the point against which a lever is placed to get purchase or upon which it turns or is supported.
- 2. (Chiefly pl.) a. Bot. Accessory organs or appendages of a plant; e.g. bracts, stipules, tendrils, etc.
- b. Ichth. (pl.) The small osseous scales arranged in a row and situated on the anterior ray of the fins of many ganoid fishes.
- c. Zool. The stem or median part of the incus of the mastax of certain rotifers.
- d. . Ent. In Diptera, a chitinous portion of the pharynx.