a. [ OE. perpetuel, F. perpétuel, fr. L. perpetualis, fr. perpetuus continuing throughout, continuous, fr. perpes, -etis, lasting throughout. ] Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous. [ 1913 Webster ]

Unto the kingdom of perpetual night. Shak. [ 1913 Webster ]

Perpetual feast of nectared sweets. Milton. [ 1913 Webster ]

Circle of perpetual apparition, or
Circle of perpetual occultation. See under Circle. --
Perpetual calendar, a calendar so devised that it may be adjusted for any month or year. --
Perpetual curacy (Ch. of Eng.), a curacy in which all the tithes are appropriated, and no vicarage is endowed. Blackstone. --
Perpetual motion. See under Motion. --
Perpetual screw. See Endless screw, under Screw. [ 1913 Webster ]

Syn. -- Continual; unceasing; endless; everlasting; incessant; constant; eternal. See Constant. [ 1913 Webster ]

. A calendar that can be used perpetually or over a wide range of years. That of Capt. Herschel covers, as given below, dates from 1750 to 1961 only, but is capable of indefinite extension.

PERPETUAL CALENDAR

Day of the month					Jan. Oct.	Apr. July Jan.	Sept. Dec.	June	Feb. Mar. Nov.	Aug. Feb.	May	Day of the Week
1	8	15	22	29	a	b	c	d	e	f	g	Mon.
2	9	16	23	30	g	a	b	c	d	e	f	Tues.
3	10	17	24	31	f	g	a	b	c	d	e	Wed.
4	11	18	25		e	f	g	a	b	c	d	Thur.
5	12	19	26		d	e	f	g	a	b	c	Fri.
6	13	20	27		c	d	e	f	g	a	b	Sat.
7	14	21	28		b	c	d	e	f	g	a	Sun.

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|1753 |1754 |1755 |1750 |1751 |1757 |*1752
 |1759 |1765 |*1760 |1761 |*1756 |1763 |1758
 |*1764 |1771 |1766 |1767 |1762 |*1768 |1769
 |1770 |*1776 |1777 |*1772 |1773 |1774 |1775
  

adv. In a perpetual manner; constantly; continually. [ 1913 Webster ]

The Bible and Common Prayer Book in the vulgar tongue, being perpetually read in churches, have proved a kind of standard for language. Swift. [ 1913 Webster ]

n. The state or condition of being perpetual. [ Obs. ] Testament of Love. [ 1913 Webster ]