See Also:

phototropism (iou) and o'(3) (iou)


phototropism (iou)



phototropism noun. L19.
[from PHOTO- + -TROPISM.]
1. Biology. The directional bending or growth of a plant or a sessile animal in response to light; an instance of this. Also = PHOTOTAXIS. L19.
2. = PHOTOCHROMISM. E20.
Also phototropy noun E20.

o'(3) (iou)



o' preposition1. Long arch. & dial. ME.
[Reduced form.]
= ON preposition.
Shakespeare Henry VIII Mercy o' me. W. A. Wallace He went to church twice o' Sundays.