DISCOVERER
finder, discoverer, spotter
(noun) someone who is the first to observe something
inventor, discoverer, artificer
(noun) someone who is the first to think of or make something
Source: WordNet® 3.1
Etymology
Noun
discoverer (plural discoverers)
One who discovers: a person who has discovered something.
Synonyms
• repertor (obsolete)
Anagrams
• rediscover, redivorces
Source: Wiktionary
Dis*cov"er*er, n.
1. One who discovers; one who first comes to the knowledge of
something; one who discovers an unknown country, or a new principle,
truth, or fact.
The discoverers and searchers of the land. Sir W. Raleigh.
2. A scout; an explorer. Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition