State to be bilateral
- the property to be symmetrical about a vertical airplane
- State of being bilateral.
(letter.) State to be bilateral.
Of Thecidiosmilia, two septa, corresponding to the mainand counter-septa of Streptelasma, are first formed, then two alar septa, and afterwards the remaining septa, the latter taking on a generally radial arrangement, though the original bilaterality is marked by the preponderance of the main septum.