fluctuation. noun change, shift, swing, variation, instability, alteration, wavering, oscillation, alternation, vacillation, unsteadiness, inconstancy Don't worry about tiny fluctuations in your weight.luctuation. noun change, shift, swing, variation, instability, alteration, wavering, oscillation, alternation, vacillation, unsteadiness, inconstancy Don't worry about tiny fluctuations in your weight.
Jim Starlin's Thanos first appeared in 1973; his 40th anniversary may be celebrated on set of The Avengers 2. (Marvel) http://herocomplex.latimes.com/movies/avengers-spoiler-special-mystery-villains-creator-speaks-out/attachment/thanos2_1336007796/.
The original description was published in 1954, by the renowned paleontologist Samuel Welles. However, at the time, it was thought to be another genus of theropod (Megalosaurus). In 1970, it was recognized to be distinct and given its own generic name Dilophosaurus. Welles later redescribed the entire taxon in 1984, in a more comprehensive paper.