a) a religion asserting that the world was created at sunrise today (along with all the geological and cosmological evidence of fifteen billion years of evolution) [authored by wofa] selected by Faldo, etaoin

b) the desire to create words indicating one's leanings, including towards causes, personal beliefs, and certain activities, and ending such words with –ism [twosleepy]

c) a cerebral bruise that causes a person to have a stone-like demeanor [olly]

d) the belief that world history changes at thousand-year intervals [Jackie] musick

e) the belief that staring at a video feedback loop, created by projecting a camera's live feed onto the monitor which that camera is focused on, is the secret to longevity (after Hofstadter) [suggested by musick, redacted by tsuwm] BranShea, olly

f) the belief that studying the lessons of history will prevent their repetition [musick]

g) sectarian the practice of worshiping the dawn [BranShea] wofa

h) the complete and/or perfect realization of a concept [tsuwm] latishya

i) the belief that the narration of the six days of creation in the Book of Genesis represent six eons rather than six, twenty-four hour periods [Owlbow] Jackie, twosleepy

j) transvestism, esp. by a man [OED2 / fr. the name of the Chevalier Charles d'Éon (1728-1810), a French adventurer who wore women's clothes: see -ISM] unselected

k) the belief that things will be better tomorrow [Faldage] Owlbow

the exegetical notes:
1) the word, obviously, is an eponym (and has nothing to do with dawn [eos], time [eons], or religion of any stripe)

2) wofa, Owlbow and musuwm each collected two(2) votes for their bluffs

3) the hogmaster scores a skunk (although this is mitigated by a somewhat reduced participation)

4) musick gave us the choice of two entries; e, we felt, needed some work-shopping and having done that we put his other entry as is (it got nada)

5) as always, remember that the points don't matter

the hogmaster™