E-ficiency 

The efficiency of a web site or browser. Basically, if you can quickly get to where your going without bookmarks, the site is E-ficient. If you have to click a bunch of links, it's not.

Man, urbandictionary.com is hell of e-ficient. I found a definition for Krazy Kracker Klub in like, ten seconds.

E-ficiency by Ian Charles August 7, 2005

Total Efficiency Coefficient, (T.E.C.)

T.E.C. Is the closest possible approximated measure of energy expended in any biochemical and or socioeconomic process from start (A) to finish (B) generally portrayed in calories and represented as a percentage in decimal form.

i.e. A boat carrying a load from South Africa to Beijing has a stand still value of (Xcalories) @ point (A)=Xcal. divided by the total calculable energy in calories expensed in “fuel”, “labor”, “payload loss” and “mechanical breakdown” used upon reaching point (B)=Xcal. where {Xt.e.c. = (A)Xcal. / (B)Xcal.}.

*Xt.e.c. = Total Efficiency Coefficient, (T.E.C.)

Total Efficiency Coefficient, (T.E.C.) by G.O.H. Ent.,Inc. October 12, 2022

Efficiency 

A Minecraft enchantment

Hey what’s up man I doing an efficiency enchantment while fishing
Bro that’s SICK

Efficiency by I_eat_beans_for_breakfast December 1, 2019

Soviet Efficiency 

A phrase that decribes any system, operation, or action, where the beaurocracy serves to create more problems than the problem it was created to solve.

Jack came into class late, the teachers inquiry of, "why were you late?" was followed by, "Sorry, the buses ran with soviet efficiency!"

Soviet Efficiency by Japanadan October 7, 2004

Asian Efficiency 

The pinnacle of human productivity and efficiency. Grants superhuman abilities of focus and attention on getting work done in the shortest amount of time, usually to the exclusion of everything else.

Not normally observed in non-Asian races, and explains the other-worldly feats and performance of Asian kids in school.

Jack: "Hey dude, what about that paper?"
Asian Kid: "Done."
Jack: "And the one on..."
Asian Kid: "Done."
Jack: "Goddamn dude, what are you on?"
Asian Kid: "Asian Efficiency dude, Asian Efficiency."

Asian Efficiency by AE Aaron October 16, 2012

Quebec Efficiency 

Quebec efficiency refers to the most inefficiently run processes possible. These processes always take at least three times as if normally run and generally six to ten times longer than if run efficiently. The term originates from the Canadian province of Quebec, where such processes occur very frequently.

Jean: "I made cookies today, and instead of buying everything before hand, I just went out and bought every ingredient when the recipe said I need it! It took me 4 hours to bake the cookies."
Jacques: "Quebec efficiency!"

Luc: "At the raffle last night, instead of drawing the three winners, they drew until there were only three left, and then those three won. It took forever."
Laurent: "Quebec efficiency!"

Quebec Efficiency by xiainx May 1, 2010

economic efficiency 

The ability of an economic system to provide what people what, given their incomes. Given the fact that incomes and resources are both finite, efficiency will be of the utmost importance in determining if people's wants are satisfied by the workings of the economic system.

Free market economies usually provide high levels of economic efficiency.

economic efficiency by abu yahya June 23, 2008