• WordNet 3.6
    • n declension a class of nouns or pronouns or adjectives in Indo-European languages having the same (or very similar) inflectional forms "the first declension in Latin"
    • n declension a downward slope or bend
    • n declension process of changing to an inferior state
    • n declension the inflection of nouns and pronouns and adjectives in Indo-European languages
    • ***
Webster's Revised Unabridged Dictionary
    • Declension A falling off towards a worse state; a downward tendency; deterioration; decay; as, the declension of virtue, of science, of a state, etc. "Seduced the pitch and height of all his thoughts
      To base declension ."
    • Declension Act of courteously refusing; act of declining; a declinature; refusal; as, the declension of a nomination.
    • Declension (Gram) Inflection of nouns, adjectives, etc., according to the grammatical cases.
    • Declension (Gram) Rehearsing a word as declined.
    • Declension The act or the state of declining; declination; descent; slope. "The declension of the land from that place to the sea."
    • Declension (Gram) The form of the inflection of a word declined by cases; as, the first or the second declension of nouns, adjectives, etc.
    • ***
Century Dictionary and Cyclopedia
    • n declension A sloping downward; a declination; a descent; a slope; a declivity.
    • n declension A sinking or falling into a lower or inferior state; deterioration; decline.
    • n declension Refusal; non-acceptance.
    • n declension In grammar: The inflection of nouns, pronouns, and adjectives; strictly, the deviation of other forms of such a word from that of its nominative case; in general, the formation of the various cases from the stem, or from the nominative singular as representing it: thus, in English, man, man's, men, men's; in Latin, rex, regis, regi, regem, rege, in the singular, and reges, regum, regibus, in the plural.
    • n declension The rehearsing of a word as declined; the act of declining a word, as a noun.
    • n declension A class of nouns declined on the same type: as, first or second declension; the five Latin declensions. Abbreviated decl.
    • ***
Chambers's Twentieth Century Dictionary
    • n Declension de-klen′shun a falling off: decay: descent:
    • n Declension de-klen′shun (gram.) change of termination for the oblique cases.
    • ***


Webster's Revised Unabridged Dictionary
Apparently corrupted fr. F. déclinaison, fr. L. declinatio, fr. declinare,. See Decline, and cf. Declination
Chambers's Twentieth Century Dictionary
See Decline.


In literature:

Hugh said three declensions, with only one mistake.
"The Crofton Boys" by Harriet Martineau
Nouns whose stems originally ended in a vowel belong to the vocalic or so-called strong declension.
"A Middle High German Primer" by Joseph Wright
Belle, there are ten declensions in Armenian!
"Lavengro The Scholar - The Gypsy - The Priest, Vol. 2 (of 2)" by George Borrow
Hugh said three declensions, with only one mistake.
"The Crofton Boys" by Harriet Martineau
Belle, there are ten declensions in Armenian!
"Lavengro The Scholar, the Gypsy, the Priest" by George Borrow
Vismuthum, vismuthi, neuter gender, second declension.
"The Day of Wrath" by Maurus Jókai
That meant declension, not growth.
"Standards of Life and Service" by T. H. Howard
Why wound thy loving Saviour's heart by these repeated declensions?
"The Faithful Promiser" by John Ross Macduff
Verbs and declensions came easily enough to her, however.
"The Beth Book" by Sarah Grand
The usual declension of the personal pronouns is exceptionable.
"A Handbook of the English Language" by Robert Gordon Latham
The whole of the first declension should be well fixed in the memory before a second is attempted.
"Practical Education, Volume II" by Maria Edgeworth
The entire loss of light during the declension occupies only four hours and a half.
"Pleasures of the telescope" by Garrett Serviss
She loathed it, and yet she had no sense of declension.
"Mummery" by Gilbert Cannan
Belle, there are ten declensions in Armenian!
"Lavengro The Scholar, The Gypsy, The Priest" by George Borrow
It was an inglorious declension from her contemplated pose of dignified assertion.
"The Wife of Sir Isaac Harman" by H. G. (Herbert George) Wells
Gather promiscuously and late, and keep without care, and rapid declension will be the result.
"Soil Culture" by J. H. Walden
Marsden grieved over this sad declension, yet could not at once apply a remedy.
"A History of the English Church in New Zealand" by Henry Thomas Purchas
But this declension Cynthia was resolved not to permit.
"A Life Sentence" by Adeline Sergeant
Not one of them, however learned he might be, disdained to be a tutor, to give the principles of grammar, and teach the declensions.
"Priests, Women, and Families" by J. Michelet
All the labyrinths of the declension of articles, nouns and adjectives in three genders and plurals, lay before me to be explored.
"Confessions of an Opera Singer" by Kathleen Howard

In poetry:

As similarity of mind,
Or something not to be defined,
First fixes our attention;
So manners decent and polite,
The same we practised at first sight,
Must save it from declension.
"Friendship" by William Cowper

In science:

The counterpart of a codon could be a declension or a grammatical inflection. A codon could be both the counterpart to that and also to affix meaning, the ”s” denoting plural, is both an affix and a decliner.
Does Meaning Evolve?