Where do you come up with map names ?
Thanks for good ideas all !
Chickenmobile's and Lpfreaky's tips together gave me great name. I thought about word what is related to story I have, then I used dictionary for searching good sounding synonym for it. Thanks! 
My mod is called Portal: Destination Hostile Volume One.
The title actually made sense in the original plot (which featured a dimension jumping Borealis - But i decided not to grind canon into dust). Not so much now, but I'm too lazy to think of anything better.
SP_CoreCiv was originally meant to be like Portal 2's early form, where the cores made their own little civilization in this facility, but it ended up being a few tests, two of them totally broken (I'll fix that map eventually, honest.)
On another note, DM_ScienceSphere is a HL2 DM map I'm working on set inside an Aperture Science Sphere, so obvious name..
So, what is it? 
Maps in Development:
[spoiler]- Penrose 04 (on hold)[/spoiler]
One of my many WIPs is named "right of way", because it is sequential.
another is called "destroyed place" because it is destroyed. the name is terrible.
Aperture Science: We do our science asbestos we can!
Hah, you dog! 
You will see it when I update whole modpage at once.
Hah, you dog! You will see it when I update whole modpage at once.
I'm actually more of a cat person. :/
Maps in Development:
[spoiler]- Penrose 04 (on hold)[/spoiler]
Hah, you dog! You will see it when I update whole modpage at once.
I'm actually more of a cat person. :/
Oh that was off-topic? woops 
When I think of names, I try to make it sound catchy or memorable while relating to the map. I'd also reference other sci-fi stuff or the campaign, but that's just me. I've only released PTI maps with uncreative names (I think the best name is "Continue Testing") but I can think of a lot based on what it contains.
Propulsion gel:
Propulsion Convolution
Lightspeed
88 miles per hour
Faith Plates:
Catapultastic
Like an Eagle
Fizzlers:
Taste of Blood
Emancipation Proclamation
Incandescence
Excursion Funnels:
Smell of Asbestos
Blue Spirals
Heartstopping
The Rats
Maybe that'll help?
Now let's solve this thing! ^^
Propulsion Convolution
Lightspeed
88 miles per hour
Faith Plates:
Catapultastic
Like an Eagle
Fizzlers:
Taste of Blood
Emancipation Proclamation
Incandescence
Excursion Funnels:
Smell of Asbestos
Blue Spirals
Heartstopping
The Rats
Catapultastic sounds really bad, it doesn't appeal to me
Like an eagle: reminds me of Iron Maiden's Flight of Icarus. Personally I think Flight of Icarus would be a better name than Like an eagle
Taste of Blood: why would you taste blood? A joke about ear-tubes would be more fitting.
Smell of Asbestos: Asbestos doesn't have a smell, which makes it more dangerous
Heart stopping: I know this joke is made in-game but in real-life asbestos causes cancer, not your heart stopping.
The Rats: Keep out the rats would be better
Just saying
Smell of Asbestos
Blue Spirals
Heartstopping
The Rats
Smell of Asbestos: Asbestos doesn't have a smell, which makes it more dangerous
Heart stopping: I know this joke is made in-game but in real-life asbestos causes cancer, not your heart stopping.
The Rats: Keep out the rats would be better
Both of you, did I miss or forget some in-game reference between Funnels and asbestos? It... isn't gaseous asbestos is it? Because I have been breathing that stuff in like it's particulate gold!
.....
But if this thread is really still being used (in an on-topic fashion, even though the OP won't need it anymore) then I'd better contribute.
So, after months of calling my maps like the bsp file (with the sp_fr_ prefix) I decided to go a different route and try a more catchy approach. Nothing fancy, but it still works in the workshop!
I agree with most posters here in that you can use used elements best for divising a name for your maps. For instance, I have a map with lasers, but it also uses fizzler puzzling quite a bit. So... Lasers + Emancipation Grills = Laser Emancipation. Simple, not special in any way, but if you tie it with screenshots and branding it does infact work better than something (even) more rusty.
Another example is Penrose. I made a map with world portals, so I thought of impossible geometry. That either brings me to Penrose or to Escher, and I like the sound of the former more... Introductory Science (the name for sp_fr_penrose_01 on the workshop) is pretty straightforward and not meaningful, but I think Room Dislocation Association is quite elegant, if I am allowed to humbly suggest so myself. And derived from the purpose of the puzzle, too. That is just done by looking for things in the dictionary of your mind, or the internet ofcourse, as has been said before.
Also, I liked the word Ouroboros, derived from the new Skyrim Online logo so much that I decided to use that for my next little project, which will play out in the underground for a change, making itself harder on completion, (biting you in the 'tail'). I know that has been done before, but by god I like that concept. So the first thing I did when I heard about that word was make a logo and concept for myself. Heck, it's even why I made a 1940's version of my logo in the first place. Don't even have a puzzle yet. Probably a bad idea, did it anyway. So what I'm trying to say here is that you can also go right ahead and choose a random word you really dig if you ask me.
So even if this wall of text doesn't bring much news to the table, at least I advertised my own maps here a bit. And I hope it helps you uninspired mappers anyway. ^^
Maps in Development:
[spoiler]- Penrose 04 (on hold)[/spoiler]