biogeographyPronunciation: /ˌbʌɪəʊdʒɪˈɒgrəfi, -ˈdʒɒg-/Definition of biogeography noun [mass noun] the branch of biology that deals with the geographical distribution of plants and animals. Derivatives biogeographer noun biogeographicPronunciation: /-dʒɪəˈgrafɪk/ adjective biogeographicalPronunciation: /-dʒɪəˈgrafɪk(ə)l/ adjective biogeographically adverb biogeography in other Oxford dictionaries Definition of biogeography in the US English dictionary