ne·o·nate
noun/ˈniːəʊneɪt/
/ˈniːəʊneɪt/
(medical)- a baby that has recently been born, especially within the last four weeks
（尤指出生不足四周的）新生儿 Word Origin1930s: from modern Latin neonatus, from Greek neos ‘new’ + Latin nat- ‘born’ (from the verb nasci).