
1) Big for a woman 2) Like capybaras and piranhas 3) Powerful and aggressive 4) Warlike
Found on
https://www.crosswordclues.com/clue/amazonian
[Mars] The Amazonian is a geologic system and time period on the planet Mars characterized by low rates of meteorite and asteroid impacts and by cold, hyperarid conditions broadly similar to those on Mars today. The transition from the preceding Hesperian period is transitional and somewhat poorly defined. The Amazonian is thought to have b...
Found on
http://en.wikipedia.org/wiki/Amazonian_(Mars)

• (a.) Pertaining to or resembling an Amazon; of masculine manners; warlike. • (a.) Of or pertaining to the river Amazon in South America, or to its valley.
Found on
http://thinkexist.com/dictionary/meaning/amazonian/
Am`a·zo'ni·an adjective 1. Pertaining to or resembling an Amazon; of masculine manners; warlike.
Shak. 2. Of or pertaining to the river Amazon in South America, or to its valley.
Found on
http://www.encyclo.co.uk/webster/A/66

(of a woman) characteristic of or like an Amazon; powerful and aggressive; warlike. · pertaining to the Amazon River or the country adjacent to it.
Found on
https://www.infoplease.com/dictionary/amazonian
No exact match found.