esoterica
UK[ˌɛsəʊˈtɛrɪkə]US[ˌɛsoʊˈtɛrɪkə]
n
things that are intended to be understood or known only by a small group of people with specialized knowledge or interest.
n
obscure or secret items, details, or information.
Morpheme Breakdown
esoteric
a
esoteric
intended for a select few
a
plural suffix
Etymology
the word 'esoterica' is the plural form of the neuter plural of the greek adjective 'esōterikos', which means 'inner'. this adjective is derived from 'esōterō', the comparative form of 'esō', meaning 'within'. originally used in the context of philosophical teachings restricted to an inner circle of disciples, the term traveled into late latin and scholarly english. the '-a' suffix directly reflects the greek neuter plural ending, which in english usage marks the word as a collective noun denoting items of a specialized, secret, or recondite nature. thus, 'esoterica' literally translates to 'the inner things', preserving the core concept of knowledge confined to a select group.
Analysis
Structure: esoteric (intended for a select few) + a (plural suffix)
esoteric (from greek esōterikos, from esōterō, comparative of esō, meaning 'within'), a (greek/latin plural suffix used in english to form collective or plural nouns from greek or latin neuter plural endings).
Examples
the professor's study was filled with ancient manuscripts and other esoterica.
the conference covered both mainstream theories and various esoterica of the field.
his blog delves into the esoterica of vintage clockwork mechanisms.