| loggerheaded | Dull; stupid. "A rabble of loggerheaded physicians." (Urquhart) Source: Websters Dictionary (01 Mar 1998) |
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| loggerheads | <botany> The knapweed. Source: Websters Dictionary (01 Mar 1998) |
| logging | The business of felling trees, cutting them into logs, and transporting the logs to sawmills or to market. Source: Websters Dictionary (01 Mar 1998) |
| logging residues | The unused portion of wood and bark left on the ground after harvesting merchantable wood. The material may include tops, broken pieces, and unmerchantable species. (05 Dec 1998) |
| logic | The science that investigates the principles governing correct or reliable inference and deals with the canons and criteria of validity in thought and demonstration. This system of reasoning is applicable to any branch of knowledge or study. (12 Dec 1998) |
| logistic curve | An S-shaped curve which depicts the growth of a population in an area of fixed limits. (05 Mar 2000) |
| logistic model | A statistical model; in epidemiology, a model of risk as a function of exposure to a risk factor. (05 Mar 2000) |
| logistic models | Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor. (12 Dec 1998) |
| logistical | 1. Logical. 2. <mathematics> Sexagesimal, or made on the scale of 60; as, logistic, or sexagesimal, arithmetic. Logistic, or Proportional, logarithms, certain logarithmic numbers used to shorten the calculation of the fourth term of a proportion of which one of the terms is a given constant quantity, commonly one hour, while the other terms are expressed in minutes and seconds; not now used. Origin: Gr. Skilled in calculating, to calculate, fr. Word, number, reckoning: cf. F. Logistique. Source: Websters Dictionary (01 Mar 1998) |
| logistics | 1. That branch of the military art which embraces the details of moving and supplying armies. The meaning of the word is by some writers extended to include strategy. 2. <mathematics> A system of arithmetic, in which numbers are expressed in a scale of 60; logistic arithmetic. Source: Websters Dictionary (01 Mar 1998) |
| logit | The logarithm of the ratio of frequencies of two different categorical and mutually exclusive outcomes such as healthy and sick. (05 Mar 2000) |
| logit transformation | A method of linearizing dose-response curves for radioimmunoassay techniques; i.e., Logit B (bound)/Bo(initial binding) = Log (B/Bo/1-B/Bo). (05 Mar 2000) |
| lognormal distribution | If a variable y is such that x = log y, it is said to have a lognormal distribution; this is a skew distribution. (05 Mar 2000) |
| logo- | Speech, words. Origin: G. Logos, word, discourse (05 Mar 2000) |
| logographer | 1. A chronicler; one who writes history in a condensed manner with short simple sentences. 2. One skilled in logography. Source: Websters Dictionary (01 Mar 1998) |