التقاء السـاكنين في الأبنية الصرفية

Abstract

this research is based on a group of matters which deal with the aspects of analysis on the structural conjugation and the manifestation of extent of harmony and coincidence between Arabic sounds and the study of this relationship through one of the important properties in Arabic . it is the phenomenon necessitated by getting rid of the meeting of two consonants in these structures . this has given the history of Arabic language and its development what may be considered the language of al-koran the elevated language in clearness and obligation . from the most distinctive phenomena that appeared through the study of the meeting of two consonants in the inflectional structure was the phenomenon of omitting the light stressed noon . what this phenomenon reflected from vocal motives was the reason for omission when the non as consonant letters is met with a vowel in al-dhamma and al-kasrah . with the illustration of evidences they make clear the permissibility of omission and the abstention of it in other positions. the two phenomena of tanween and diphthong also appeared and both were stndied in the framework of getting two consonants together where the omission of tanween is determined by three phases : first :the tanween is omitted by the meeting of two consonants being similar to the omission of noon .second :it is similarity to the proper nouns.third :when omitted by necessity .as for diphthony its occurrence leads to the meeting of long vocal syllable .in the occurrence of two voiceless sounds vanishes according to whom he is not doing the diphthong as is the case with the higazians or with others who were permitting diphthong where I presented a group of examples .the pronunciations referred to was that the Arabic method of long vocal syllables permits the meeting of two consonant sounds with an indication to the necessary reasons for that.