Of the night; used in reference to flowers that open after dark.

Related to nighttime, or occurring at night.

of flowers, opening only at night.

active and hunting during the night.

A 16th and 17thC circular navigating instrument for use at night. The number of hours before or after midnight was measured by the difference between two pointers - one set to the date and hour on the instrument scale, the other directed at the pole star. Nocturnals are found in wood or brass; metal ones often have 'teeth' on the scale so the hours could be counted in the dark.

Active primarily during night

Happens at night. On this site we use it to mean when an animal hunts its food or when it is most active.

"Of the night;" pertaining to events happening during sleep or the hours of darkness.

refers to events that occur at night.

Animals that are most active durin...

Refers to night, or animals that are active during night.

animals that are awake during the night and sleep during the day. References Clark, T.W., 1987. Mammals in Wyoming. Lawrence: Museum of Natural History, University of Kansas. Dingwall, Laima, 1986. Nature's Children: Porcupines. Grolier, Danbury, CT. Jones, Jr., J. Knox, et al., 1985. Guide to Mammals of the Plains States. Lincoln: University of Nebraska Press, Lincoln, NE. _______, 1983. Mammals of the Northern Great Plains. Lincoln: University of Nebraska Press. Whitaker, Jr., John O., 1980. The Audubon Society Field Guide to North American Mammals. New York: Knopf. Selected Resources for Teachers Carrick, Carol, Ben and the Porcupine. New York: Clarion, 1981. Dingwall, Laima, Nature's Children: Porcupines. Danbury: Grolier, 1986.

of or relating to or occurring in the night; "nocturnal darkness"

of or during or relating to the night; "a nocturnal journey"; "nocturnal stillness"; "nocturnal predators"

an instrument for finding the hour of the night by observation of the relative positions of the pole-star and other stars, generally the pointers of Ursa Major

an instrument for measuring time at night using the stars

of the night or night-related; the opposite of diurnal.

A bird or animal that comes out after dark.

Animals that are most active during the hours of darkness are nocturnal. Bats, cats, mice and moths are good examples.

relating to or taking place at night.

Having to do with nighttime.

Describing an animal that is active mainly or exclusively at night, rather than by day (Morris 1992).

Animals whose primary activity occurs during the dark portion of the daily cycle.

Being most active at night.

A nocturnal animal is one most active at night.

A word used to describe creatures that are active at night, in darkness or in dark underground areas. (D&D 1)

Active only at night.

Active during twilight hours - dawn and dusk.

A creature which is active at night

active during the night, in the dark, and sleeps during the day.

Active during the night. Opposite of diurnal.

active at night, hermit crabs are nocturnal.

A nocturnal animal is one that stays awake at night, and usually one that hunts for its food at night.

active or occurring at night.

active at night Owls are nocturnal birds because they hunt for food when it is dark.

animals that are active at night, resting during the day.

Nocturnal means most active at night. Most moths are nocturnal.

An animal that sleeps during the day and is active at night.

A nocturnal animal is primarily active at night. Diurnal animals are mainly active during the day. Crocodiles are usually considered to be nocturnal.

active during the night time

Active during the night. Insectivores usually hunt insects at night facilitated by big eyes.

Active primarily at night

Opening at night and closing during the day.

animals that are active during the night

Active at night. ( cf. diurnal and crepuscular).

Creatures who are active at night are referred to as nocturnal; of or in the night.

being most active during the night.

Night-active. Back to top of Glossary page

Active at night and asleep during the day.

Active and feeding at night.

If your reptile or amphibian is nocturnal, this means they are active during the night.

blooms during the night.

Refers to an animal that is active at night and sleeps during the day. Hamsters are more accurately defined as crepuscular.

instrument for finding the time at night from the orientation of the stars, see article on the nocturnal.

active at night e.g. owls

resting during the day and active at night

plants or animals that are active at night.

Pertaining to the dark portion of a 24h day; active at night (filariasis).

A nocturnal animal is one that is active at night-time.

Of, relating to, or occurring in the night. See also Crepuscular

The term means "active at night." Compare with "diurnal" and "crepuscular." During the breeding season and while on their wintering grounds, Purple Martins sleep at night. But during certain parts of their migration they are known to be nocturnal migrants.

mainly active at night.

Active during nighttime.

Of animals which are active at nigh, especially those with physical adaptations for night living such as bats.

Refers to animals that are active at night.

animals that are active at night and rest during the day.

Describes the behavior of being active at night

Active mostly at night.

Active at night and inactive during the day.

Active or blooming during the night. See diurnal, crepuscular.

active by night

Refers to animals or reptiles which are usually only active at night.

Organisms that are active at night

Planets below the horizon (between the first and seventh cusps via the IC), versus Diurnal, above the horizon.

Related to night-time, or occurring at night.

describes a creature that sleeps during the day and is most active at night.

Nocturnal means activity during nighttime hours.The reason why deer can move around in the dark is because they see well at night. There is a membrane at the back of the eye that specially filters light, allowing them keen vision in low lighted areas.

Nocturnal animals are most active during the night (compare with diurnal).

mohK-terr-Nal) Hunting, feeding, and general living at night.

Nocturnal is relating to, or occurring in the night. It pertains to events that happen during sleep or the hours of darkness.

"Of the night;" pertains to events that happen during sleep or the hours of darkness.

(adj) – Active at night

From the Latin nocturnus, of night. Refers to the lower (northern) hemisphere of a horoscope, the "night" section, that part of the heavens that falls below Earth's horizon.

A nocturnal is an instrument used to determine the time based on the position of a certain star in the night sky. Sometimes called an "horologium nocturnum", it is closely related to the sun dial. A nocturnal is typically a navigational instrument.