#nimbus
- Anafront — A type of atmospheric front (usually a cold front) where warm air masses are structurally forced to ascend rapidly and vigorously along the inclined frontal surface of the moving cold air. This dynamic phenomenon causes an accelerated adiabatic expansion of the rising warm air, generating a relatively narrow band of clouds with pronounced vertical development (cumulonimbus), accompanied by intense convective precipitation, showers, lightning, and squalls.
- Anvil — A neologism of Anglo-Saxon origin used in medical and technical jargon to designate the anvil; in anatomy it represents the small bone in the middle ear (incus) involved in transmitting sound vibrations; in meteorology it describes the flat and extended shape of the upper part of a Cumulonimbus cloud (anvil cloud).
- Aureole — As a verbal form (third-person singular past tense of 'a aureola'), it signifies the past action of surrounding with an aura, a nimbus, or a glowing halo. As a noun, it represents a neologistic or graphic Latin variant for 'aureolă' (halo), denoting the luminous circle surrounding the head of sacred figures in iconography or an atmospheric optical phenomenon.
- Haloed — Provided with a halo, nimbus, or luminous circle; surrounded by a glow of light or an atmosphere of glory and mystical prestige. In biology and botany, it describes an organ, spot, or cellular structure surrounded by a ring of a different color (such as the bordered pits of xylem vessels in conifers).
- Shower — A liquid (rain) or solid (snow, hail) atmospheric precipitation, characterized by its sudden start and end, rapid and intense variations in the amount of fallen water, and abrupt modifications in the sky appearance; it is frequently accompanied by electrical discharges, short-term wind gusts, and squalls, triggered by vertically well-developed cumulonimbus clouds.