isobar
n.
1864, coined from Greek isos "equal" (see iso-) + baros "weight" (see grave, adj.). Line connecting places with the same barometric pressure at the same time.
〔李〕[iso-;bar] n.等压线 ←bar (GK baros)=weight 重量
〔李〕n.[气] 等压线 [bar=weight] ←iso-[GK] =equal等；alike同