The British and European sycamore tree, Acer pseudoplatanus. / An American plane tree.

the property of being symmetrical about a vertical plane / (biology) the characteristic, in animals, of being symmetric about a plane running from head to tail

(physics) the fundamental symmetry of physical laws under transformations that involve the simultaneous inversions of charge, parity and time

A person devoted to pleasure and luxury.

(number theory) A mathematical function of integer a and odd positive integer b, generally written (a/b), based on, for each of the prime factors pᵢ of b, whether a is a quadratic residue or nonresidue modulo pᵢ.

(number theory) A mathematical function of an integer and a prime number, written (a/p), which indicates whether a is a quadratic residue modulo p.

(medicine) Showing symptoms. / Relating to, based on, or constituting a symptom. / (medicine) Relating to symptomatics

A person exhibiting the symptoms of an illness.

A venomous spider, Atrax robustus, native to the greater Sydney region of eastern Australia.

(mythology) An invisible being of the air. / The elemental being of air, usually female.