meteoro-, meteor- +
(Greek: upraised, high up; in the air; anything raised from the ground, high, lofty; hovering in the air; hence, "heavenly body, atmospheric phenomenon")
2. The investigation of the (alleged) influence upon the weather, climate, etc. of planetary and stellar phenomena; such as, sun-spots, phases of the moon, comets, meteors, and planetary conjunctions.
This was a branch of an older natural astrology; and the term is often applied to a pretended prognostication of the weather, which is no better than modern "astrology".
2. That branch of ecology that deals with the effects on living organisms of the extra-organic aspects of the physical environment; such as, temperature, humidity, barometric pressure, rate of air flow, and air ionization.
It involves not only natural atmosphere but also artificially created atmospheres; such as, those to be found in buildings and shelters, and in closed ecological systems; for example, satellites and submarines.
2. A luminous body seen temporarily in the sky, and supposed to belong to a lower region than that of the heavenly bodies; a fireball or shooting star (in the 17th century, also a comet).
3. The brief, bright streak of light that results when a piece of silicate or metallic rock enters the atmosphere at high speed from space and burns up.
4. Applied to other luminous appearances, as the aurora borealis, the ignis fatuus, etc.
5. Blazing or flashing like a meteor; of short duration, passing rapidly (meteoric), transient.
2. In botany, dependent upon atmospheric conditions.
3. Of, pertaining to, or derived from meteors; consisting of meteors.
4. A figure of speech: transiently or irregularly brilliant, flashing or dazzling like a meteor; also rapid, swift.
A meteorite is a natural object of extraterrestrial origin that survives passage through the earth’s atmosphere and hits the earth’s surface.
- A meteoroid is a small object in outer space, generally less than 30 feet (10 m) in diameter.
- A meteor, sometimes called a shooting star, is the flash of light seen when an object passes through earth’s atmosphere and burns as a result of heating caused by friction.
- A meteoroid becomes a meteor when it enters the earth’s atmosphere; if any portion of a meteoroid lands on earth, it is a meteorite.
- Irons contain 85-95‰ iron; the rest of their mass is mostly nickel.
- Stony irons are relatively rare meteorites composed of about 50‰ iron and 50‰ silicates.
- Stones are made up mostly of silicates and other stony materials.