radial
radial section
radius (pl radii)
rafter
railroad ties
railway sleepers
raindrops
rainforest
raised grain
range
rate
raw material
reaction wood
reason
reciprocating saw
recover
rectangular
reduce
reducing
redwood
reel-up
reference face
refining
reflect
regularize
regularizing
relationship
remain
repeatedly
reproduce
reproductive capacity
reproductive organ
reproductive problem
required
requirement
resaw (resawn)
residue
resin
resin canal
resinous
resistance
respiration
respirator
respiratory
responsibility
retention
revolving
rhytidome
ridged
rift sawn
ring shake
ring-porous
ripping
roller
rolling shear
roof truss
root
root collar
root hair
rot
rotary cut
rotary tool
rotating
rough
round
round timber
router
router bit
rule
rupture
