photochemical smog

plural of Sumatran rhino

A tree, Pinus merkusii, native to Sumatra and the Philippines.

plural of Sumatran pine

(Buddhism) The name of the 7th of 27 named Buddhas immediately preceding Gautama.

(complex analysis) Any of several variations of the Borel summation method for summing possibly divergent formal power series.

movable tower used in sieges

(obsolete) the upper summer of a lapidary's wheel

(architecture, obsolete) a horizontal load-bearing beam in a building or other structure; (in later use) spec. the main beam supporting the girders or joists of a floor (or occasionally the rafters of a roof).

Alternative spelling of summercastle