phonological processes
ASSIMILATION
Assimilation has a very precise meaning when it’s related to studies of languages. Is a common phonological process bye which the phonetics of a speech segment becomes more like another segment in a word. In other words it’s when a letter (sound) is influenced by the letter (sound) before or after it so that it changes its sound and/or spelling. The word assimilation it self it’s said to be assimilated; it is derived from the latin prefix ad- meaning to and simil- meaning like but, instead of being adsimilated, it has the easier pronunciation of assimilated.
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Progressive assimilation
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Elision
Elision is common in casual conversation.
More specifically, elision may refer to the omission of an unstressed vowel, consonant, or syllable. This omission is often indicated in print by an apostrophe. Verb: elide.
Etymology: From the Latin, "to strike out"
Pronunciation: ee-LIJZ-en
Examples and Observations
"Elision of sounds can .
. . be seen clearly in contracted forms like isn't (is not), I'll (I shall/will), who's (who is/has), they'd (they had, they should, or they would), haven't (have not) and so on. We see from these examples that vowels or/and consonants can be elided. In the case of contractions or words like library (pronounced in rapid speech as /laibri/), the whole syllable is elided." (Tej R Kansakar, A Course in English Phonetics. Orient Blackswan, 1998)
The Nature of Reduced Articulation
"It is easy to find examples of elision, but very difficult to state rules that govern which sounds may be elided and which may not. Elision of vowels in English usually happens when a short, unstressed vowel occurs between voiceless consonants, e.g. in the first syllable of perhaps, potato, the second syllable of bicycle, or the third syllable of philosophy...
Dissimilation
