Oh well, in any event, occurred to me that it would be useful to have the ones I have so far collected on one page for ready reference:
science (noun): the art of prediction using methodologies and tools to expand zones of certainty by discovery of a predictive framework.
scientific theory (noun): predictive framework found by using science.
scientist (person): practitioner of science.
All found on my Lost in Commentary blog in post: Predictive Certainty
First two are also on my math blog, in post: For mathematical scientists
First one first posted on G+ though. So things are the most scattered around here. Don't like it that way. Guess it just happened.
Progressive (noun): in politics a political position valuing intelligent governance with the belief that in an intelligently governed world people's lives tend to get better, not worse.
Original found on Lost in Commentary, in post: Government that enables
Edited for this page. Removed "person" and added "in politics".
mathematical proof (noun): a mathematical argument that begins with a truth and proceeds by logical steps to a conclusion which then must be true.
Is on my math blog Some Math, in post: Definition of mathematical proof
entertainment (noun): any socially accepted activity chosen in order to alter mood in a desired way which is unlikely to bring harm in any way.
Found on this blog, Beyond Mundane, in post: Trying to define entertainment
These are the fully formalized ones. I have other working definitions for things, where I haven't bothered. Putting them here would be a waste as eventually I'll probably formalize them, and want that to be in one place.
I keep these definitions in as few places as possible in case I decide to change them, or remove them. Easier to do if I don't have them scattered all over the place.
This page can be my official repository for finalized versions.
The goal is to have as few as possible. As this effort is about necessity. If I need a functional definition for something, then I'm kind of stuck until I have one.