a straight temper line on a blade

(Classical Japanese, archaic) to pass; to go beyond / (Classical Japanese, archaic) to elapse; to exceed

not so good / (accounting) minus, equivalent of parentheses in English

the three types of arms made out of leather: armor, helmet, and shield / in traditional Japanese cosmology, a general term for the three years that often accompanied change: kakumei, kakuun, and kakurei

diffusion, scattering, spread / (physics) diffusion

to scatter, to spread

(genetics, biochemistry) nucleic acid

participation in planning, policy-making, etc.

to have a part, to take part in planning

Kyūjitai form of 拡散 (“diffusion, scattering, spread”)