the original or base form; the shape/state before alteration. In grammar, the base (dictionary) form of a word.
その陶器は壊れていたが、原形ははっきりしている。
The pottery was broken, but its original shape is still clear.
この単語の原形は何ですか。辞書で調べてください。
What is the base form of this word? Please look it up in a dictionary.
事故で原形をとどめないほど車が変形した。
The car was so deformed in the accident that it no longer retained its original shape.
彫刻家は古い像をもとに原形を復元した。
The sculptor restored the original form based on the old statue.