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accidence

[ak-si-duh ns] /ˈæk sɪ dəns/
noun
1.
the rudiments or essentials of a subject.
2.
Grammar.
  1. the study of inflection as a grammatical device.
  2. the inflections so studied.
Origin
1500-1510
1500-1510; < Latin accidentia, neuter plural of accidēns (present participle of accidere to fall, befall). See accident
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for accidence

accidence

/ˈæksɪdəns/
noun
1.
inflectional morphology; the part of grammar concerned with changes in the form of words by internal modification or by affixation, for the expression of tense, person, case, number, etc
Word Origin
C15: from Latin accidentia accidental matters, hence inflections of words, from accidere to happen. See accident
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for accidence
n.

late 14c., in philosophy, "non-essential or incidental characteristic," also "part of grammar dealing with inflection" (mid-15c.), in some cases a misspelling of accidents, or else directly from Latin accidentia (used as a term in grammar by Quintilian), neuter plural of accidens, present participle of accidere (see accident). The grammar sense is because they change in accordance with use.

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for accidence

inflection

in linguistics, the change in the form of a word (in English, usually the addition of endings) to mark such distinctions as tense, person, number, gender, mood, voice, and case. English inflection indicates noun plural (cat, cats), third person singular present tense (I, you, we, they buy; he buys), past tense (we walk, we walked), verbals (called, calling), and comparatives (big, bigger, biggest). Changes within the stem, or main word part, are another type of inflection, as in sing, sang, sung and goose, geese. The paradigm of the Old Icelandic u-stem noun skjoldr ("shield"), for example, includes forms with both internal change and suffixation; the nominative singular form is skjoldr, the genitive singular is skjaldar, and the nominative plural is skildir. Many languages, such as Latin, Spanish, French, and German, have a much more extensive system of inflection. For example, Spanish shows verb distinction for person and number, "I, you, he, they live," vivo, vives, vive, viven ("I live," "you live," "he lives," "they live"). A number of languages, especially non-Indo-European ones, inflect with prefixes and infixes, word parts added before a main part or within the main part. Inflection differs from derivation in that it does not change the part of speech. Derivation uses prefixes and suffixes (e.g., in-, -tion) to form new words (e.g., inform, deletion), which can then take inflections.

Learn more about inflection with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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