According to SOWPODS (the combination of Scrabble dictionaries
used around the world) there are 5 words with the pattern -I-ICID-.
That is, eight letter words with 2nd letter I and 4th letter I and
5th letter C and 6th letter I and 7th letter D. In alphabetical
order, they are:
filicide
miticide
silicide
viricide
viticide