L adjuratio, a swearing to < pp. of adjurare, adjure
adjuration in American English
(ˌædʒəˈreiʃən)
noun
1.
an earnest request; entreaty
2.
a solemn or desperate urging or counseling
an adjuration for all citizens of the beleaguered city to take shelter
Word origin
[1605–15; ‹ L adjūrātiōn- (s. of adjūrātiō), equiv. to adjūrāt(us), ptp. of adjūrāre to adjure + -ion--ion]This word is first recorded in the period 1605–15. Other words that entered Englishat around the same time include: classic, gothic, ideal, inverse, surface-ion is a suffix, appearing in words of Latin origin, denoting action or condition, usedin Latin and in English to form nouns from stems of Latin adjectives (communion; union), verbs (legion; opinion), and esp. past participles (allusion; creation; fusion; notion; torsion)