Term: inversion: the layer of air near the earth is cooler than an overlying layer
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: rifle grenade: a grenade that is thrown from a launching device attached to the barrel of a rifle
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: genus sesbania: small genus of tropical and subtropical leguminous herbs or shrubs or trees
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: shallowness: the quality of lacking physical depth
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: male hypogonadism: the state of being a eunuch (either because of lacking testicles or because they failed to develop)
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: abacus: a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: comedy: light and humorous drama with a happy ending
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: jitteriness: the anxious feeling you have when you have the jitters
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: medusa's head: weedy rye grass having long bristling awns
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: hydrography: the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: skink: alert agile lizard with reduced limbs and an elongated body covered with shiny scales; more dependent on moisture than most lizards; found in tropical regions worldwide