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.
(sÅ­n) n. 1. often Sun The star around which Earth and other planets orbit. It provides heat and light to Earth. It has a mean distance from Earth of about 150 million kilometers (93 million miles), a diameter of approximately 1,391,000 kilometers (864,000 miles), and a mass about 333,000 times that of Earth.