Having identical parts on each side of an axis
English: bilateral, isobilateral, bilaterally symmetrical, bilaterally symmetric
bilaterally_symmetricalEnglish
bilaterally symmetrical, bilateral, bilaterally symmetric, isobilateral, zygomorphic
Adjective
Capable of division into symmetrical halves by only one longitudinal plane passing through the axis
English: zygomorphic, bilaterally symmetrical, zygomorphous