Semitic root

Semitic Root languages are characterized as a sequence of consonants or "radicals". 

 Triconsonantal roots 
A triliteral or triconsonantal root (Hebrew: שרש תלת-עצורי, šoreš təlat-ʻiṣuri; Arabic: جذر ثلاثي, jiḏr ṯulāṯī; Syriac: ܫܪܫܐ, šeršā) is a root containing a sequence of three consonants. 
Semitological abbreviationHebrew nameArabic nameMorphological categoryHebrew FormArabic formApproximate translationG verb stem 
() 
pa‘al (or qal)fa‘ala 

(Stem I)3rd. masc. sing perfectkataḇ kataba "he wrote"1st. plur. perfectkataḇnu katabnā "we wrote"3rd. masc. sing. imperfectyiḵtoḇ yaktubu "he writes, will write"1st. plur. imperfectniḵtoḇ naktubu "we write, will write"masc. sing. active participlekoteḇ kātib "writer"Š verb stem af‘ala 

(Stem IV)3rd. masc. sing perfecthiḵtiḇ aktaba "he dictated"3rd. masc. sing. imperfectyaḵtiḇ yuktibu "he dictates, will dictate"Št(D) verb stem 
hitpa‘elistaf‘ala 

(Stem X)3rd. masc. sing perfecthitkatteḇ istaktaba  "he corresponded" (Hebrew), "he asked (someone) to write (something), had a copy made" (Arabic)3rd. masc. sing. imperfectyitkatteḇ yastaktibu (imperfect of above)Noun with m- prefix and original short vowelsmip̄‘al maf‘al singularmiḵtaḇ maktab "letter" (Hebrew), "office" (Arabic)

 References 

Category:Linguistics