travel via aircraft | an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system |
a distinctive but intangible quality surrounding a person or thing | an abstract part of something |
a succession of notes forming a distinctive sequence | the most favorable environment for a plant or animal |
medium for radio and television broadcasting | a straight line that generates a cylinder or cone |
the region above the ground | the situation in which you are happiest and most effective |
the mass of air surrounding the Earth | any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
a slight wind (usually refreshing) | one of four substances thought in ancient and medieval cosmology to constitute the physical universe |
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of | |
once thought to be one of four elements composing the universe (Empedocles), associated with the humour blood | |