An endangered species of gadfly petrel endemic to the island of Madeira, Portugal, Pterodroma madeira.

(chemistry) Used in combination with a known element name (e.g. 'tri-silicon') to designate an unknown element that would reside three periods lower than the known element on a Mendeleev-type perio...

(archaic) Relating or tending toward discontent.

(transitive) To draw back; to withdraw.