bor·rel·i·a 
(bə-rĕlē-ə, -rēlē-ə)
(bə-rĕlē-ə, -rēlē-ə)n.
Any of various spirochetes of the genus Borrelia that are pathogens of humans, other mammals, and birds, including the causal agents of Lyme disease and relapsing fever.
[New Latin, after Amédée Borrel (1867-1936), French bacteriologist.]