
ETYMOLOGY
from Latin vigilat-, ppl. stem of vigilare (to remain awake)
EXAMPLE
“… Mountain Hawkweed with long slender stalks and small flowers. The flowers are in their expanded or vigilating state from five or six in the morning till about ten. …”
From: Philosophical Transactions
Volume L. Part II. For the Year 1758
Printed 1759
“Some Observations upon the Sleep of Plants”