Princeton's WordNet

1. natural history(noun)

   the scientific study of plants or animals (more observational than experimental) usually published in popular magazines rather than in academic journals

Wiktionary

1. natural history(Noun)

   The study of all living things, especially their origins, evolution and interrelationships.

2. natural history(Noun)

   The study of all natural phenomena.

3. natural history(Noun)

   A treatise or similar work that summarizes the known facts of either of the above.

U.S. National Library of Medicine

1. Natural History

   A former branch of knowledge embracing the study, description, and classification of natural objects (as animals, plants, and minerals) and thus including the modern sciences of zoology, botany, and mineralogy insofar as they existed at that time. In the 17th, 18th, and 19th centuries it was much used for the generalized pursuit of certain areas of science. (Webster, 3d ed; from Dr. James H. Cassedy, NLM History of Medicine Division)

• natuurAfrikaans
• التّاريخ الطَّبيعيArabic
• природознаниеBulgarian
• história naturalPortuguese (BR)
• přírodopisCzech
• die NaturgeschichteGerman
• naturhistorieDanish
• φυσική ιστορίαGreek
• historia naturalSpanish
• loodusluguEstonian
• تاریخ طبیعیFarsi
• luonnontietoFinnish
• histoire naturelleFrench
• תוֹלדוֹת הַטֶבַעHebrew
• प्रकृति-विज्ञानHindi
• prirodopisCroatian
• természetrajzHungarian
• ilmu hayatIndonesian
• náttúrufræðiIcelandic
• storia naturaleItalian
• 博物学Japanese
• 박물학Korean
• gamtos mokslaiLithuanian
• dabaszinātnesLatvian
• sejarah semula jadiMalay
• biologieDutch
• naturhistorieNorwegian
• przyrodoznawstwoPolish
• تاریخ طبیعیPersian
• طبيعى تاريخPashto
• história naturalPortuguese
• ştiinţele naturiiRomanian
• естествознаниеRussian
• prírodopisSlovak
• prirodopisSlovenian
• istorija prirodeSerbian
• naturhistoriaSwedish
• การศึกษาเกี่ยวกับกับสิ่งมีชีวิตThai
• doğabilim, tabiat bilgisiTurkish
• 博物學Chinese (Trad.)
• природознавствоUkrainian
• پودوں اور جانوروں کا مطالعہUrdu
• vạn vật họcVietnamese
• 博物学Chinese (Simp.)