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stiffening ['stɪf(ə)nɪŋ] v
agric. ballasten; stijlen ter verstijving van plaatvelden
construct. verstijving
to stiffen ['stɪf(ə)n] v
construct. verstijven
stiffen
: 28 phrases in 8 subjects
Chemistry1
Construction8
Earth sciences1
General2
Industry2
Materials science2
Metallurgy1
Transport11