synfuel

noun 0.591

synchro

noun 0.576

synchromesh

noun 0.566

synchrotron

noun 0.564

oil sand

noun 0.558

syngas

noun 0.554

photosynthate

noun 0.544

sour crude

noun 0.544

biocrude

noun 0.541

synchrocyclotron

noun 0.535

sync

noun 0.534

sweet crude

noun 0.530

synthesis gas

noun 0.525

hydrocracker

noun 0.522

sump oil

noun 0.520

synthetic

noun 0.517

synchronizer

noun 0.516

synth

noun 0.505

synthetase

noun 0.501