centroidal vs mediopassive

centroidal

adj

  • Of or pertaining to a centroid. 

  • Having a single centroid. 

mediopassive

adj

  • Pertaining to a voice of a transitive verb that is both middle voice and passive voice or reflexive and passive voice. 

noun

  • A mediopassive construction; a phrase that uses the mediopassive voice. 

How often have the words centroidal and mediopassive occurred in a corpus of books? (source: Google Ngram Viewer )