English
lionitis
From lion + -itis, from the leonine facial appearance in some cases.
Formed from lion + -itis
Today it means
noun craniodiaphyseal dysplasia: a rare autosomal-recessive bone disorder that causes calcium to build up in the skull, disfiguring the facial features and reducing life expectancy
Language periods are conventional ranges, not dates for this word.
Etymograph / lionitis