2. Noun. A person whose age is between thirty and thirty-nine years, inclusive; someone in his or her thirties. Someone in his or her fourth decade. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Tricenarian
Other Resources:
2. Noun. A person whose age is between thirty and thirty-nine years, inclusive; someone in his or her thirties. Someone in his or her fourth decade. ¹
¹ Source: wiktionary.com