Thredworm or Threadworm: How To spell?

The word Thredworm is misspelled against Threadworm, a noun meaning "Any long, slender nematode worm, especially the pinworm and filaria."

Threadworm has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets thr & dworm is misspelled as 'E'
Wrong Spelling:  thr-e-dworm 
Correct Spelling:  thr-ea-dworm 
Find more incorrect spellings of Threadworm to spell right way.

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