noun
Refers to something newly found or devised, often with a sense of breakthrough or innovation.
その新発見は科学界に衝撃を与えた。
The new discovery shocked the scientific community.
彼の新発見の技術は特許を取得した。
His newly invented technology was patented.
発明 specifically means 'invention', whereas 新発見 can cover both discovery and invention.
Compound of 新 (new) and 発見 (discovery). The reading しんはっけん follows standard on'yomi with rendaku on the second element.