helio-, heli- +
(Greek: sun)
heliometry
The use of a telescope with a movable split-lens objective, primarily to measure the angular distance between two stars; originally used to measure the diameter of the sun.
heliopathy, heliopathia
1. Physical injury from exposure to sunlight.
2. Any pathological changes induced by sunlight.
heliopause
The outer boundary of the heliosphere, where the solar (or interplanetary) magnetic environment gives way to the interstellar.
heliophil
Any creature that lives or thrives in full sunlight.
heliophile
Living, well-adapted to, or thriving in full sunlight.
heliophilic
A reference to any organism which is living, well-adapted to, or thriving in full sunlight.
heliophilous
1. In biology, thriving in sun-light or under conditions of high-light intensity.
2. A condition in which some desert organisms have adapted to both strong sunlight and to drought.
heliophily
Living, adapted to, and thriving well in an environment of sunshine.
heliophobe
1. In biology, a plant that is intolerant of full sunlight and grows best in the shade.
2. In medicine, a person who is abnormally sensitive to or has an exaggerated fear of the rays of the sun.
heliophobia
1. An irrational fear of sunlight.
2. An abnormal sensitivity to the effects of sunlight; a strong aversion to sunlight.
In some cases, it may be based on the many warnings that one may get skin cancer from exposure to the sun.
3. In biology, intolerant of high light intensity; shade-loving.
heliophobic
Someone who has an exaggerated fear of the sun's rays.
heliophyll
The leaves of plants which require full sunlight to survive and to thrive.
heliophyllous
A reference to plants that have leaves that can tolerate full sunlight.
heliophyte
A plant that flourishes under conditions of full sunlight.
heliophytic
A descriptive reference to a plant that flourishes under conditions of full sunlight.
Related "sun" word family:
sol-.
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