solecism, Socratic, sapphic, Platonic... - definitions from Ninjawords (a really fast dictionary)

solecism: noun; °Error in the use of language, especially an error concerning etiquette.; °In written language, the intentional use of misspelling and/or incorrect grammar to affect the vernacular of a particular dialect.

Socratic: adjective; °of or characteristic of the philosopher Socrates or his philosophical methods and/or views.; noun; °a follower of Socrates.

sapphic: adjective; °relating to the Greek poet Sappho or her poetry.; °relating to lesbianism, lesbian.

Platonic: adjective; °Of or relating to the ancient Greek philosopher Plato or his philosophies.

mnemonic: adjective; °Of or related to mnemonics: the study of techniques for remembering anything more easily.; noun; °Anything (especially something in verbal form) used to help remember something.; synonyms: aide-memoire

laconic: adjective; °Using as few words as possible to communicate much information; pithy and concise.; synonyms: concise, pithy, terse

cynosure: noun; °Cynosure — Ursa Minor, or Polaris the North Star, used as a guide.; °Something that guides; something that is the center of attention.

"let faith be your cynosure to walk by"

aeolian harp: noun; °An open box over which strings are stretched that sound when the wind passes over them.; synonyms: wind harp

pernicious: adjective; °Causing death or injury; deadly.; °Causing much harm in a subtle way.

noxious: adjective; °unpleasant and possibly also harmful, typically in reference to odorous fumes.

necrosis: noun; °The localized death of cells or tissues through injury or disease.

internecine: adjective; °Mutually destructive; most often applied to warfare.; °Characterized by struggle within a group, usually applied to an ethnic or familial relationship.

"The Mongol people were plagued by internecine conflict until Genghis Khan unified them and focused their aggression outwards on other peoples."

mortify: verb; °to embarrass.; °to discipline oneself by suppressing desires.

"Some people seek sainthood by mortifying the body. I wonder if such ascetics are masochists?"

mortician: noun; °An undertaker or funeral director.

moribund: adjective; °Approaching death; about to die; expiring.; °Almost obsolete, nearing an end.; noun; °(archaic) A person who is near to dying.

immortality: noun; °the condition of not being susceptible to death or aging.