Epidemic, epidermis, epigramme, eoigraph, elileptic, epilogue, episode, epistle, epithet, epitome, epistolary, epicurian
Epicenter, epidural, epilation, and epinephrine are all words that start with the prefix epi-.
One likely possibility would be "epi."
The prefix in the word "seizure" is "seiz-".
mid
epi/gastricEpi- (above)gastr (stomach)-ic (pertaining to)
intra-
Words that start with the prefix holy include:holystoneholydayholytide
Words with the prefix -im:immaterialimmatureimmobileimmortalimpartialimperfectimpossibleimpracticalimproperWords with the prefix -in:inaccurateinactiveincalculableincapableincapacitateinconceivableindescribableindiscriminateindivisibleineffectiveingrowninvisibleinvoluntary
Words that start with the prefix af:AfroAffairAfterAfghanAfoulAfraidAffordAforeAfootAffirm
Epi is the prefix to change to "dia". One has "epi"logue which changes to "dia"logue...a conversation.
Words starting with pre - (prefix):precursorprejudgepreludepremedpremixprenatalprenuptialpresortpresumepreteenWords beginning with pre, (not a prefix):preachpreenpresspressure
dermis, from the latin word "derma" meaning skin, is the root word epi is the prefix meaning "on"