(philosophy) The doctrine of Cyrenaics that people should ultimately aim at the pleasure of the present moment, disregarding future pain that could result from it.

Third-person singular simple present indicative form of replank

(chemistry) The anion Fe(C₂O₄)₃³⁻ or any salt containing this anion; potassium ferrioxalate is used as a standard in actinometry

(nautical, historical) Either of a pair of rails down which a ship is launched.