Third quarter moon is when the moon is halfway between full and new, while on the way to new. If you stand with your back to the sun, actually where the sun would be because its probably below the horizon, a third quarter moon will be about 90 degrees to your left, and the left face will be illuminated.
The moon phase you are describing is the waning gibbous phase. This occurs after the full moon and before the third quarter moon when the illuminated portion of the moon is decreasing.
New moon, first quarter, full moon and third quarter
The first quarter moon occurs when the moon is halfway between the new moon and full moon, and one-quarter of its surface is illuminated. It appears as a half-circle in the sky, with the right side illuminated. It is also known as a half moon.
The amount of the lighted side of the moon you can see is the same during the first quarter and the last quarter phases. In both phases, half of the moon's illuminated side is visible from Earth.
The Earth's moon has eight distinct phases. These include new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent.
A third quarter moon is when the moon has made it three quarters around the Earth during a lunar month (starting from new moon). The third quarter moon phase somes in between Full moon and New moon - meaning that it is a waning "half moon". A third quarter moon rises at midnight and sets around noon.
Third Quarter is when the moon is half and is getting smaller.
full moon
'Third Quarter' occurs 7.38 days after a Full Moon.After the Third Quarter, you'd have to wait 22.1 daysfor the next Full Moon.
New moon, first quarter, full moon and third quarter.
There is the new moon, first quarter, full moon, and third quarter.
waning
A fourth quarter moon?? not a third quarter
A half moon refers to both the first quarter and the third quarter moon phase.
Full moon,New moon,First quarter,Third quarter or Last quarter.
This happens about once a month. We call this the "third quarter" phase of the moon.
Neap tides are the ones that coincide with the Moon's First Quarter and Third Quarter.