noun
evolved form; developed form
Used especially in gaming, anime, and pop culture for a character or creature's advanced or transformed state. Also used more broadly for any evolved version of something.
このポケモンの進化形はとても強い。
This Pokémon's evolved form is very strong.
そのアイデアの進化形が、今の製品に繋がっている。
The evolved form of that idea led to the current product.
進化 is the general process of evolution, while 進化形 refers specifically to the resulting evolved form or version.
Compound of 進化 (evolution) and 形 (form/shape) or 系 (system/lineage). The exact derivation is uncertain, but the term likely arose in gaming and pop culture to describe evolved characters or creatures.