lunˈarnaut or lunˈanaut noun

An astronaut who travels or has travelled to the moon

luˈnary noun

1. The moonwort fern
2. The plant honesty

Lunar

luˈnate or luˈnated adjective

Crescent-shaped

lunāˈtion noun

A synodic month

lune /loon or lūn/ noun

1. Anything in the shape of a half-moon
2. A lunule
3. A fit of lunacy (Shakespeare)

lunetteˈ noun

1. Anything crescent-shaped
2. A crescent-shaped ornament
3. A semicircular or crescent-shaped space where a vault intersects a wall or another vault, often occupied by a window or by decoration
4. An arched opening in a vault
5. A detached bastion (fortification)
6. A small horseshoe
7. A watchglass flattened more than usual in the centre
8. In the Roman Catholic Church, a moon-shaped case for the consecrated host

lunisōˈlar adjective

Relating to the moon and sun jointly (lunisolar calendar and lunisolar year a calendar or year divided according to the changes of the moon, but made to agree in average length with the solar year)

lunitīˈdal adjective

Relating to the moon and its influence on the tide (lunitidal interval the time interval between the moon's transit and the next high tide at a particular place)

luˈnūla noun

1. A lunule (obsolete)
2. A crescent-like appearance, esp the whitish area at the base of a nail
3. A Bronze Age crescent-shaped gold ornament forming part of a necklace

luˈnūlar adjective

luˈnūlate or luˈnulated adjective

1. Shaped like a small crescent (botany)
2. Having crescent-shaped markings

luˈnule noun

1. Anything shaped like a small crescent
2. A geometrical figure bounded by two arcs of circles

lunar caustic noun

Fused crystals of silver nitrate, applied to ulcers, etc

lunar cycle same as Metonic cycle (see Metonic).

lunar distances plural noun

A method of finding longitude by comparison of the observed angular distance of the moon from a star at a known local time, with the tabulated angular distance at a certain Greenwich time

Lunar Excursion Module noun

(sometimes without caps) a module for use in the last stage of the journey to land on the moon (abbrev LEM or lem)

lunar month see under month

lunar theory noun

The a priori deduction of the moon's motions from the principles of gravitation

lunar year see under year