Definition of Peterson, Roger Tory in English:
Peterson, Roger Tory
proper nounˈpiːtəs(ə)nˈpidərsən
(1908–96), American ornithologist and artist. Peterson produced his first book for identifying birds in the field in 1934, introducing the concept of illustrating similar birds in similar postures with their differences highlighted. The format of his field guides has become standard in field guides for all groups of animals and plants.
Definition of Peterson, Roger Tory in US English:
Peterson, Roger Tory
proper nounˈpidərsənˈpētərsən
(1908–96), US ornithologist and artist. Peterson produced his first book for identifying birds in the field in 1934, introducing the concept of illustrating similar birds in similar postures with their differences highlighted. The format of his work has become the standard in field guides.