farthening

Verb

farthen (third-person singular simple present farthens, present participle farthening, simple past and past participle farthened)

1. (ambitransitive, rare) To make or become farther; increase in distance.
   • Covering this zone there is a porous transition zone with a thickness from 10 to 20 micrometers, which becomes more compacted as it farthens from the fibre.1992, J.C. Maso, Interfaces in Cementitious Composites