Skip to main content

Theory of Mass Elasticity

A companion to Spacetime Elasticity, proposing that mass itself has elastic properties—that mass can be stretched, compressed, or transformed in ways that enable novel technologies and travel methods. Mass Elasticity suggests that inertia, gravity, and mass-energy equivalence are not fixed but can be modulated through fields or spacetime engineering. This could enable "mass cancellation" for propulsion, variable inertia for spacecraft, or even mass redistribution for gravitational control. The theory goes hand in hand with Preserved Causality and Spacetime Elasticity, forming a triad of concepts that together make interstellar civilization plausible.
"The ship's mass field fluctuated as we approached the warp threshold—not increasing with velocity, but redistributing across spacetime. Theory of Mass Elasticity explains it: mass isn't fixed; it's responsive to spacetime curvature. We didn't get heavier; we got stretchier."
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Theory of Elasticity of Mass

A speculative framework proposing that mass has elastic properties—that it can stretch, compress, or transform under extreme conditions. Theory of Elasticity of Mass suggests that mass isn't fixed but responsive: to velocity (relativistic mass increase), to gravity (gravitational binding energy), to fields (quantum mass corrections). The theory extends these known effects into a general principle: mass is elastic, and its elasticity can be engineered. Not just mass-energy equivalence, but mass-stretch equivalence.
Theory of Elasticity of Mass "As the ship approached light speed, its mass stretched—not just increased, but distorted, redistributed. Elasticity of Mass says that's not a bug; it's a feature. Mass stretches under velocity, under gravity, under stress. Understanding mass means understanding how far it can stretch before it breaks."
More from Urban Dictionary

pod person 

A person pretending to be something they aren't, or an impostor. This is inferred because of the old alien movies where alien pods appear on earth and the "pod people" dispose of the humans and slowly reproduce the bodies, pretending to be humans.
The pod person was pretending to be my father, but I knew that he was an alien when he acted differently than my father ever would have.
pod person by Christopher M. May 9, 2005
Word of the Day on November 10, 2026
A dead drop is a location used to secretly pass items between two people, without requiring them to meet.

Spies have been known to use dead drops, using various techniques to hide the items and to signal that the drop has been made. Drug dealers use this as well.

A common place is to duct tape the item to the underside of a toilet cover in a public restroom.

A signal is sometimes used as well to indicate there is something to pickup, like a pile of stones in a certain formation. After checking the drop the signal is removed.
"The dead drop is the restroom toilet at the Gulf station at the corner of Commercial Ave. and Georges Rd."
dead drop by rubberroom July 23, 2008
Word of the Day on November 9, 2026

No Surprises Wedding

A "No Surprises Wedding," or NSW, is a wedding invitation designation that tells attendees that there can be no unplanned announcements, engagements, events or speeches at the wedding - all actions must be pre-approved by the couple. Anyone who performs an unapproved "surprise" will be asked to leave the wedding early.

This designation comes from Reddit, where so many stories of bad wedding behavior indicated a need to communicate expectations for the wedding behavior of attendees.
You are cordially invited to the nuptials of Brian and Tom on October 31 at noon.

Please note that this wedding is child-free (under 10) and a No Surprises Wedding (NSW). Reach out to wedding planner Sami Smith to request approvals or exceptions; please note that exceptions will be rare. Limited child care for under-10s will be available. All approvals will be noted and included in planning. Unapproved, or surprise exceptions, will result in guests being asked to leave.
Word of the Day on November 8, 2026
Ulzzang true definition is "best & "face" = best face in korean. They are basically people with above average looks, sometimes with the use of photoshop and haduri who post their pics online, some becoming internet celebrities.
"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"
ulzzang by `r i k kit t y February 26, 2008
Word of the Day on November 7, 2026
EBK stands for "Elite Ball Knowledge." 1 In internet slang, "ball knowledge" originally referred to a deep understanding of football/soccer or basketball, but it has evolved into a broader term for having a highly sophisticated, deep, or niche understanding of any specific topic (such as music, movies, or subcultures).
Person A: "That scene was a direct homage to an unreleased 1982 Japanese indie film."
Person B: "Wow, EBK."
EBK by silwhett November 5, 2026
Word of the Day on November 6, 2026
A seemingly endless debate with a idiot
I don't know man im not ready for yap trap stupidity today which always tries to suck you into it
Yap Trap by WolfieSnack November 4, 2026
Word of the Day on November 5, 2026
Load more