helio
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From Greek hēlios (sun). Forms scientific and technical vocabulary about the sun and solar phenomena: helium (element discovered in the sun's spectrum), heliocentric (sun-centered), heliotrope (a plant that turns toward the sun), and heliotherapy (sun-based medical treatment).
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helium
A colorless, inert noble gas, symbol He
heliotrope
A sun-facing plant; a light purple colour
heliocentric
Having the sun as the center, especially of the solar system
heliosis
Sunstroke or sunburn from excessive sun exposure
heliotherapy
Medical treatment by exposure to sunlight or artificial light
heliotropic
Tending to turn or grow toward the sun
heliotropism
The tendency of plants to grow or turn in response to sunlight