Anatomical space that is an opening in a bone, usually for passage of blood vessels or nerves. [ TAO:curator ]
Synonyms: foramens@fr foramina@fr
in FMA and ZFA this is a conduit space, not a conduit. Note there may be some additional disambiguation required: foramen is used loosely in the sense of any opening (e.g. foramen primum). FMA appears to use cranial conduit (undefined) in the sense of any foramen of the skull (includes mental foramen, which is not in the cranium proper).