Specuniary

Meaning: Relating to speculative money.
Pronunciation: Speck-cue-ni-ya-ree.
Usage: Land sharks are into it for specuniary gains.
Root: Speculative + Pecuniary.

Marsinogenic

Meaning: Any toxic substance that has the potential to cause fatalities on Mars.
Pronunciation: Mar-see-no-gen-nick.
Usage: The fine dust from perchloric acid is said to be a known marsinogenic.
Root: Mars + Carcinogenic.

Functuation

Meaning: The marks, such as :-), ,-), (:-), or ;-(, used in communication to spice up sentences.
Pronunciation: Funk-choo-asian.
Usage: Emoticons are functuation marks that have been invented to make obvious the tonality of the written word.
Root: Fun + Punctuation.