The word "bacteriochlorophyll" uses 19 letters: abccehhillloooprrty.
bacteriochlorophyll is a valid word in this word list. For a definition, see the external dictionary links below.
Try a search for bacteriochlorophyll in these online resources (some words may not be found):
Wiktionary - OneLook Dictionaries - Merriam-Webster - Google Search
Each search will normally open in a new window.
Words formed by adding one letter before or after bacteriochlorophyll (in bold), or to abccehhillloooprrty in any order:
Shorter words found within bacteriochlorophyll