| Lederer | Max, U.S. Pathologist, 1885-1952. See: Lederer's anaemia. (05 Mar 2000) |
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| Lederer's anaemia | An obsolete eponym for a form of acute acquired haemolytic anaemia associated with abnormal haemolysins and sometimes with haemoglobinuria. (05 Mar 2000) |
| Ledermann | Sully, French psychiatrist. See: Ledermann formula. (05 Mar 2000) |
| Ledermann formula | A formula to calculate alcohol dependancy levels. Ledermann showed empirically that the distribution of alcohol consumption in a population is log normal; the formula used this observation to estimate the prevalence of various degrees of alcohol dependency. Some questions have been raised about the validity of Ledermann's observations. (05 Mar 2000) |
| ledge | 1. A shelf on which articles may be laid; also, that which resembles such a shelf in form or use, as a projecting ridge or part, or a molding or edge in joinery. 2. A shelf, ridge, or reef, of rocks. 3. A layer or stratum. "The lowest ledge or row should be of stone." (Sir H. Wotton) 4. <chemical> A lode; a limited mass of rock bearing valuable mineral. 5. A piece of timber to support the deck, placed athwartship between beams. Origin: Akin to AS. Licgan to lie, Icel. Liggja; cf. Icel. Logg the ledge or rim at the bottom of a cask. See Lie to be prostrate] [Formerly written lidge. Source: Websters Dictionary (01 Mar 1998) |
| ledger | 1. A book in which a summary of accounts is laid up or preserved; the final book of record in business transactions, in which all debits and credits from the journal, etc, are placed under appropriate heads. Alternative forms: leger. 2. A large flat stone, especially. One laid over a tomb. A horizontal piece of timber secured to the uprights and supporting floor timbers, a staircase, scaffolding, or the like. It differs from an intertie in being intended to carry weight. Alternative forms: ligger] Ledger bait, fishing bait attached to a floating line fastened to the bank of a stream, pond, etc. . Ledger line. <chemical> See Leger line, under 3d Leger, Ledger wall, the wall under a vein; the foot wall. Origin: Akin to D. Legger layer, daybook (fr. Leggen to lay, liggen to lie), E. Ledge, lie. See Lie to be prostrate. Source: Websters Dictionary (01 Mar 1998) |