The word "ergophore" is spelled phonetically as /ˈɜːrɡəfɔːr/. The first syllable "ergo" is pronounced with the vowel sound /ɜːr/ followed by a hard "g" sound /ɡ/. The second syllable "phore" has the vowel sound /fɔːr/ and ends with a silent "e". The word "ergophore" refers to a structure in some bacteria that helps them transfer nutrients to other cells. Despite its complex spelling, the pronunciation is fairly straightforward once you understand the phonetics.
Noting the atom group of the antigen or antibody molecule upon which its specific action (toxic, lytic, etc.) depends; opposed to the haptophore or combining group.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.