gnosis

[noh-sis] /ˈnoʊ sɪs/
noun
1.
knowledge of spiritual matters; mystical knowledge.
Origin
1695-1705; < Neo-Latin < Greek gnṓsis a seeking to know, equivalent to gnō-, base of gignṓskein know + -sis -sis

-gnosis

1.
a combining form meaning “knowledge,” used in the formation of compound words:
prognosis.
Origin
< Latin -gnōsis < Greek; see gnosis
British Dictionary definitions for gnosis

gnosis

/ˈnəʊsɪs/
noun (pl) -ses (-siːz)
1.
supposedly revealed knowledge of various spiritual truths, esp that said to have been possessed by ancient Gnostics
Word Origin
C18: ultimately from Greek: knowledge, from gignōskein to know

-gnosis

combining form
1.
(esp in medicine) recognition or knowledge: prognosis, diagnosis
Derived Forms
-gnostic, combining_form:in_adjective
Word Origin
via Latin from Greek: gnosis
Word Origin and History for gnosis
n.

"special knowledge of spiritual mysteries," 1703, from Greek gnosis "investigation, knowledge," in Christian writers, "higher knowledge of spiritual things" (see gnostic (adj.)).