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.
The sunrise is the exact instant at which the upper edge of the Sun becomes visible over the eastern horizon, in the morning. It's also called sun up. With sunset we refer to the instant when the trailing edge of the Sun stops being visible and disappears below the western horizon in the evening.