• WordNet 3.6
    • n illation the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation
    • ***
Webster's Revised Unabridged Dictionary
    • n Illation The act or process of inferring from premises or reasons; perception of the connection between ideas; that which is inferred; inference; deduction; conclusion. "Fraudulent deductions or inconsequent illations from a false conception of things."
    • ***
Century Dictionary and Cyclopedia
    • n illation The act of inferring from premises; inference.
    • n illation That which is inferred; an inference; a deduction; a conclusion.
    • n illation In liturgics: The act of bringing the eucharistic elements into the church and placing them on the altar.
    • n illation In the Mozarabic liturgy, the eucharistic preface. It is of great length, and varies according to the Sunday or festival.
    • ***
Chambers's Twentieth Century Dictionary
    • n Illation il-lā′shun act of inferring from premises or reasons: inference: conclusion
    • ***


Webster's Revised Unabridged Dictionary
L. illatio, fr. illatus, used as p. p. of inferre, to carry or bring in, but from a different root: cf. F. illation,. See 1st In-, and Tolerate, and cf. Infer
Chambers's Twentieth Century Dictionary
Fr.,—L. illation-eminferre, illātumin, in, into, ferre, to bear.


In literature:

Newman, on the Illative Sense, 6.
"Darwin, and After Darwin (Vol. 1 and 3, of 3)" by George John Romanes
If this be the Illation.
"Discourse on Floating Bodies" by Galileo Galilei
And to have faith we must admit the Illative sense of John Henry Newman.
"Unicorns" by James Huneker
But this is a very injust illation, not well considering with what variety this part is seated in Birds.
"The Works of Sir Thomas Browne (Volume 1 of 3)" by Thomas Browne
Some have written Rhetorically, and concessively, not controverting, but assuming the question, which taken as granted, advantaged the illation.
"The Works of Sir Thomas Browne (Volume 2 of 3)" by Thomas Browne

In news:

Phil Jackson, apparently emboldened by a long career and large family, paid a visit to pox-illated/quarantined guard Steve Blake on Thursday night, hoping to keep him in the loop with some game film.