| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| megaceros | noun | The Irish elk. |
| megachile | noun | A leaf-cutting bee of the genus Megachilus. See Leaf cutter, under Leaf. |
| megafarad | noun | One of the larger measures of electrical capacity, amounting to one million farads; a macrofarad. |
| megalonyx | noun | An extinct quaternary mammal, of great size, allied to the sloth. |
| megameter | noun | An instrument for determining longitude by observation of the stars., A micrometer., Alt. of Megametre |
| megametre | noun | In the metric system, one million meters, or one thousand kilometers. |
| megampere | noun | A million amperes. |
| megaphone | noun | A device to magnify sound, or direct it in a given direction in a greater volume, as a very large funnel used as an ear trumpet or as a speaking trumpet. |
| megapolis | noun | A metropolis. |
| megascope | noun | A modification of the magic lantern, used esp. for throwing a magnified image of an opaque object on a screen, solar or artificial light being used. |
| megastome | noun | One of a group of univalve shells, having a large aperture or mouth. |
| megathere | noun | Alt. of Megatherium |
| megaweber | noun | A million webers. |