Definitions

1. noun

A genus of extinct scallops; an extinct genus of bivalve mollusks, especially those of the family Spiriferidae.

“The paleontologist studied the spirifer fossils found in the limestone formation.”

2. noun

A person who discovers or brings to light new information, especially in a particular field.

“She was a spirifer of modern knowledge, shedding light on long-forgotten historical events.”