(quantum mechanics) A method for describing a quantum process by probing with known quantum states.

(manufacturing, medicine) Tomographic imaging of processes, especially industrial.

(mathematics) The question as to the value of ∑ₙ₌₁ ᪲1/(n²), the sum of the reciprocals of the squares of the positive integers.

A cause of action in tort arising from one party making a malicious and deliberate misuse or perversion of regularly issued court process (civil or criminal) not justified by the underlying legal action.

(slang) no problem.

A repressor found in λ phage (a bacteriophage that particularly infects the human digestive bacteria, E. coli) which turns off genetic transcription at the phage's L and R promoters, and thus prevents multiple phages from infecting a single host.

Alternative spelling of leakproof

(US) Used other than figuratively or idiomatically: 55% alcohol by volume. / (idiomatic) Stronger than strong.

Intensely; strongly.

A tax, usually ad valorem, charged on the basis of the fair market value of property. The scope of taxable property varies by jurisdiction and it may include personal property in addition to real estate.