The common Malaysian name for the trees and timber of Nephelium spp. (Sapindaceae). Vernacular names applied include kelamondoi (Sabah), lotong (Peninsular Malaysia), meritam (Sabah), pulasan (Peninsular Malaysia), rambutan hutan (Peninsular Malaysia), rambutan pachat (Peninsular Malaysia), redan (Peninsular Malaysia) and various other localised names too numerous to be listed here. Major species include N. cuspidatum, N. daedaleum, N. lappaceum, N. maingayi, N. meduseum, N. melanomiscum and N. ramboutan-ake. The sapwood is lighter in colour and is only moderately sharply defined from the heartwood, which is red-brown to light purple-brown.
Also known as Balatoeng, Boeloea, Meritan, Mudjau, Ridan, Tampa langke and Tokok-biawak (Indonesia); Rambutan (Philippines); Ngoh (Thailand); and Truong chua and Vai thieu (Vietnam).
The timber is hard to very hard and heavy to very heavy with a density of 880-1,075 kg/m3 air dry.
It is durable under cover and generally resistant to insect attacks, but susceptible to fungal attack.
Texture is moderately fine and even, with interlocked or slightly irregular grain.
The timber is easy to work and can be finished well.
The timber of N. lappaceum is liable to splitting during seasoning.
The timber is used for general construction, furniture, tool handles, door and window frames, agriculture implements and other general utility purposes.
Wong, T. M. 1982. A Dictionary of Malaysian Timbers. Revised by Lim, S. C. & Chung, R. C. K. Malayan Forest Records No. 30. Forest Research Institute Malaysia, Kuala Lumpur. 201 pp.