Words that contain 'o' and end in 'is'

In Scrabble, what's the most points possible using this list of words that have 'o' in and end with 'is'?
As there are loads of words to select from, you'll want to select 'zymolyis' which scores 25 points.

How many characters are in the longest word from this list?
'Gastroenteroanastomosis', which has 23 letters.

Which is the most unique word from this list?
The most interesting word based on a recent poll is 'prognosis'. 'Prognosis' is defined as "The act or art of foretelling the course and termination of a disease; also, the outlook afforded by this act of judgment; as, the prognosis of hydrophobia is bad.", according to the English dictionary.

How many acceptable words are possible to make using the combination specified?
It is possible to derive 3,035 words from the combination of words that have 'o' in and end with 'is'.

Is there a word on this page that sticks out as the most popular?
Ranking as the 3383^rd most common word, you'll want to ensure that you've got 'trois' in your arsenal.