natural phenomenon (phenomena)
abnormal phenomenon; anomaly
supernatural phenomenon; paranormal phenomenon; anomalous phenomenon
unnatural phenomenon; strange happenings; haunting
physiological phenomenon; physiological response
mysterious phenomenon; weird phenomenon; paranormal phenomenon
aging process; ageing process
heat island phenomenon; heat island effect
astronomical phenomenon; celestial event
Brocken spectre; Brocken bow
regression to an earlier stage (e.g. infantile)
föhn phenomenon; foehn phenomenon
(lit.) doughnut phenomenon; combination of urban sprawl and inner-city decay
albinism; chlorosis; bleaching (of coral)
albinism; chlorosis; bleaching (of coral)
phenomenology; phenomenalism
precursor; premonitory phenomena; telltale signs; advance warnings
atmospheric optical phenomenon
atmospheric optical phenomenon
Mariko Aoki phenomenon; phenomenon of feeling an urge to defecate when stepping inside a bookstore
phenomenological sociology
phenomenological reduction
interfacial phenomenon; surface phenomenon
yellow sand phenomenon (dust carried on high winds from China)
Galapagos phenomenon; Galapagos syndrome; tendency of Japanese products (e.g. cell phones) to be designed specifically for the domestic market, which are therefore unsuccessful overseas and also vulnerable to competition from imports
phi phenomenon (optical illusion)
Liesegang phenomenon; Liesegang ring
seatbelt submarining (sliding under a seatbelt during a collision); seat belt submarining
seasonal (weather) phenomenon