Rectilinair or Rectilinear: How To spell?
The word Rectilinair is misspelled against Rectilinear, an adjective meaning "Straight; consisting of a straight line or lines; bounded by straight lines; as, a rectineal angle; a rectilinear figure or course."
Rectilinear has vowels 'ea' together mispronounced as 'ai'Word contains consecutive vowels 'EA' in between alphabets rectilin & r is misspelled as 'AI'
Wrong Spelling:  rectilin-ai-r  Correct Spelling:  rectilin-ea-r 
Find more wrongly spelled words of Rectilinear to spell it well.