solar month

One-twelfth of a solar year

synodic month

The period of the moon's phases = 29.5306 days

tropical or periodic month

The time from the moon's passing the equinox until it reaches it again = 27.3216 days

solar¹ /sōˈlər/

adjective

1. Of, from, like, or relating to the sun
2. Measured by the sun
3. Influenced by the sun
4. Powered by energy from the sun's rays
5. With branches radiating like the sun's rays

noun (also sōˈler, sollar or soller /solˈər/; OE solor, or OFr soler; archaic)

1. An upper room
2. A garret
3. A landing between ladders in a mine

solarimeter /-imˈit-ər/ noun

A device for measuring solar radiation

sōˈlarism noun

Excessive use of solar myths in the explanation of mythology

sōˈlarist noun

solāˈrium noun

1. A sundial
2. A place for sunbathing or equipped with sunbeds
3. A conservatory or other room allowing exposure to sunlight

sōlarīzāˈtion or sōlarīsāˈtion noun

1. The act, process, or effect of solarizing
2. The reversal of an image by over-exposure (photography)
3. The interruption of photosynthesis by long exposure to bright light (botany)

sōˈlarize or sōˈlarise transitive verb

To expose to sunlight or affect by such exposure, esp excessive or injurious exposure

intransitive verb

To be so affected

solar battery noun

A battery of solar cells

solar cell noun

A photoelectric cell converting sunlight into electric power

solar constant noun (astronomy)

The rate at which the sun's energy reaches the earth's surface, equal to approx 1370 watts per square metre

solar day see under day

solar eclipse noun

An eclipse of the sun by the interposition of the moon

solar energy noun

Energy obtained from the sun's rays, esp when used for home-heating, etc

solar flare noun

A short-lived bright outburst in the sun's chromosphere, generally associated with sun spots and often the cause of radio and magnetic disturbances on earth

solar furnace noun

A furnace using sunlight (guided and focused by a system of mirrors) as a heat source

solar heating noun

A method of providing hot water, esp for domestic heating systems, by collecting heat radiated by the sun in water passed through solar panels

solar microscope noun

An obsolete apparatus for projecting an enlarged image

solar month see under month

solar myth noun

A sun-myth, or a myth allegorizing the course of the sun

solar noise noun

A hissing background noise heard in radio communication, due to radiation from the sun and its atmosphere

solar panel noun

A panel of solar cells, esp when used to provide domestic heating or power for spacecraft, etc

solar plexus noun (anatomy)

A network of sympathetic nerves high in the back of the abdomen (so called from its radiating nerves; also called coeliac plexus)

solar power noun

Solar energy

sōˈlar-powered adjective

solar prominences plural noun

Large prominent or protruding parts of the great volumes of heated gas surrounding the sun

solar salt noun

Salt got by evaporation of seawater by the sun

solar system noun

The sun with its attendant bodies, ie major and minor planets, meteors, comets, satellites

solar time see under time

solar wind noun

Charged particles emitted by the sun, travelling at about one and a half million kilometres an hour

solar year see under year