Of one’s own free will, of one’s own volition.

Any of many small crustaceans, of the class Ostracoda, that resemble a shrimp enclosed in a bivalve shell.

A period of time consisting of one thousand years. / (Christianity) The period of one thousand years during which Christ will reign on earth (according to Millenarianist interpretations).

(Greek mythology) Ancient Greek goddess of health, cleanliness, and sanitation. Her Roman name is Hygēa/Hygīa or Salus. / (astronomy) 10 Hygiea, a main belt asteroid.