始祖 shǐzǔ founder Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: All meanings (2) All meanings 1 shǐzǔ founder primogenitor 1 sentence 始祖鸟被认为是现代鸟类的祖先。 shǐzǔniǎo bèi rènwéi shì xiàndài niǎolèi de zǔxiān. Archaeopteryx is considered the ancestor of modern birds. Source: Dong Chinese Dictionary