Inbred strains (also called inbred lines, or for animals linear animals) are individuals of a particular species which are nearly identical to each other in genotype due to long inbreeding.
Freebase(3.00 / 2 votes)Rate this definition: Sunlight. Sunlight is a portion of the electromagnetic radiation given off by the Sun, particularly infrared, visible, and ultraviolet light. On Earth, sunlight is filtered through the Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon.
Definition of solar for Students. 1  1 : of or relating to the sun a solar eclipse. 2  2 : measured by the earth's course around the sun a solar year. 3  3 : produced or made to work by the action of the sun's light or heat solar energy.