Letters that make external-combustion engine
s, a, o, b, e, g, l, n, c, m, r, t, i, u, x are letters that make 'external-combustion engine'
Words within external-combustion engine
ER, engine, ion engine, MB, ti, te, XT, OMB, extern, RN, en, ng, ombu, Gi, external, ex, on, bust, GI, in, comb, combustion, gin, ern, tern, bus, Mb, US, AL, CO, IN, NE, Io, ion, Al, Co, Er, In, Ne, Rn, Na, Te, Ti, RNA, combust are words within 'external-combustion engine'