Alternative form of lashline

(mathematics) The line containing the locus of points from which the segments respectively tangent to two given circles have equal length.

(idiomatic) Absolutely not; under no circumstances.

a surface that uses electroluminescence to produce light

(astronomy) a graph of the intensity of radiation from an astronomical object as it changes with time

(physics) any optical method used to measure the extent of the scattering of light by suspended particles or by macromolecules

Alternative spelling of light year

Any large portion of the Earth's land area which has a generally uniform climate and soil and therefore a high degree of uniformity in the composition of species; a number of different classifications have been proposed by different people.

Full-scale, as a model that is the same size as what it is a model of.

(physics) A rectifying semiconductor device which converts electrical energy into electromagnetic radiation of a wavelength in or near the visible spectrum of light.