i dont know if this makes sense but would cell work
A four letter word starting with the letter a is able.
Four letter words:theytidytinytobytonytorytraytroy
Several four letter words begin with the letter q. However, there are no four letter words that begin with the letter q and end with the letter o.
Some four letter words with the first letter f are:facefadefailfairfallfamefarmfastfearfeedfeelfeetfestfilefillfilmfinefirefirmfishfistflapflatflewflitflipflitflopfluefoalfoamfoldfolkfoodfoolfootforkformfortfourfrayfreefretfromfuelfullfumefuryfussfuzz
Cell.
CELL, as in cell phone, I guess.
cell, crop
they all have different jobs
Cyto
i dont know if this makes sense but would cell work
room, hole, unit, ring
Cage is a four-letter word that starts with c and means cell. Or case! Or the 5 letter word Crypt!
Cart Cat At A
The letter "E."
The answer is quadrennially.Quadrennially is defined as something that happens once every four years. Or something which lasts four years.For example, the Olympics are held quadrennially (every 4 years).
according to Modern Human Physiology by Frederick D. Cornett and prof. Pauline Gratz, an "Axon" is a four letter word for an appendage of a neuron.