monorhinous

or mon·o·rhi·nal

[mon-uh-rahy-nuh s or mon-uh-rahyn-l]

adjective Zoology.

having a single, median nostril, as the cyclostomes.

Also mon·o·rhine [mon-uh-rahyn] /ˈmɒn əˌraɪn/.

Origin of monorhinous

1900–05; mono- + -rhinous < Greek -rhinos -nosed, adj. derivative of rhīs, stem rhin- nose; see -ous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018