(malacology, of a shell or fossil) Having a flattened crossection, the halves joining at an acute angle.

(ichthyology) Of a fish's tail, such that the vertebral column bends and extends upwards into the upper lobe of the tail, making it larger than the lower lobe; as in sharks, rays, and skates.

An East Indian wood of a reddish-orange colour, veined with darker marks.

(US) Acronym of National Incident Management System.