Mica (mī'-ka). A transparent mineral that can be separated into thin sheets or layers.

Microscope (mī'-krō-skōp). An instrument that magnifies, or makes objects look larger when placed beneath it.

Moult (mōlt). (L. mutare = to change.) To shed or cast off the feathers, hair, or skin.

Muscle (mus'-l). Bundles of fibres that have the power of growing longer or shorter. The body is moved by means of the muscles.

Nary (ner'-i). "Ne'er a," a contraction of "never a."

Nerve (nerv). (L. nervus = a fibre or tendon.) The nerves are fibres or threads that carry impressions to the brain. Nerved = having fibres, as in the wings of insects.

Neuroptera (nū-rŏp'-te-ra). (Gr. = nerve-wing.) The name of an insect order.

Nymph (nimf). (L. nympha = a bride, a young girl.) The young of insects that undergo an incomplete metamorphosis.

Ocelli (o-sel'-le), pl. of Ocellus. (L. = a little eye.) The tiny, simple eyes of insects.

Odonata (ō-dō-na'-ta). The name of an insect order to which belong the dragon flies.