bilaterally symmetrical

1. Of or relating to diatoms of the class Pennales, distinguished by bilaterally symmetrical form. a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime.
   硅藻的属于或有关以双侧对称形状著名的硅藻的一种软质的银色稀土属金属元素，见于硅铍钇矿、独居石和磷钇矿中。
2. Small class of bilaterally symmetrical marine forms comprising the tooth shells. pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent.
   由两边对称的海洋掘足纲软体动物组成的一个小纲。南美洲无尾的两栖类啮齿动物，体型大小如猪，部分蹼足；最大的现存啮齿动物。
3. Stout orchid of central California to northern Washington having racemes of white fragrant bilaterally symmetrical flowers.
   加利福尼亚中部到华盛顿北部地区的一种强壮的兰花，有总状花序，白色、芳香的小花对称开放。
4. Primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates.
   原始的细长身体且两边对称的海生软体动物，有上覆八个钙质骨盘的覆盖物。
5. Cephalopod mollusk of warm seas whose females have delicate papery spiral shells. small class of bilaterally symmetrical marine forms comprising the tooth shells.
   温暖海洋中的头足类软体动物，雌性有精致的象纸一样的螺旋状壳。由两边对称的海洋掘足纲软体动物组成的一个小纲。
6. "When Born, the flounder is Bilaterally symmetrical, with an eye on each side, and it swims near the sea's surface."
   其形态发育极罕见，出生时身体两侧各有一只眼，且常在近水面处游泳
7. Results NOS positive neurons were observed bilaterally symmetrical in the layers ⅰ~ ⅱ of spinal nucleus of trigeminal nerve and the upper cervical spinal cord.
   结果NOS免疫反应阳性神经元主要分布在三叉神经脊束核和上颈段脊髓的第Ⅰ、Ⅱ板层，双侧对称。
8. Distribution of the lesion were diffuse bilaterally and symmetrical.
   病变弥漫分布于两肺野，呈对称性；
9. The fruit size of the neat uniform, medium sized, oval cylindrical, bilaterally symmetrical, the average single fruit weight 7.36g, fruit size and tidy uniform.
   其果实大小整齐均匀，中等大，椭圆柱形，两侧对称，单果平均重7.36g，果实大小整齐均匀。

adj

1. having identical parts on each side of an axis

   Synonym:    bilateralisobilateralbilaterally symmetric

2. capable of division into symmetrical halves by only one longitudinal plane passing through the axis

   Synonym:    zygomorphiczygomorphous