/ɛsɒˈtɛrɪkə/ i.e. es-oh-TER-ik-uh

Definitions

1. noun

a body of knowledge or a field of study that is considered obscure or little-known

“The professor specialized in esoterica, teaching courses on ancient mythology and mysticism.”

2. noun

something that is obscure or difficult to understand

“The novel’s esoterica were confusing for the average reader, but fascinating for fans of literary theory.”