Definition of transient. 1  1 : one that is transient (see 1transient): such asa : a guest or boarder who stays only brieflyb : a person traveling about usually in search of work. 2  2a : a temporary oscillation that occurs in a circuit because of a sudden change of voltage or of loadb : a transient current or voltage.
Gerontophobia is the fear of growing old, or a hatred or fear of the elderly. Many people have this phobia. The term comes from the Greek Î³Î­ÏÏÎ½ â gerÅn, old man and ÏÏÎ²Î¿Ï â phobos, fear. 1 Ageism.
Lead (or Pb in the periodic table) is a naturally occurring heavy metal that is found in the Earthâs crust. Lead can be released into soil, air and water through soil erosion, volcanic eruptions, sea spray and bushfires. The natural concentration of lead in the air is less than 0.1 microgram per cubic metre.