megascopic

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Macroscopic.

Century Dictionary and Cyclopedia

1. Perceptible through unaided vision; visible without the use of a powerful magnifying instrument, or with only the assistance of a pocket-lens: used in contrast to microscopic, with reference to objects or investigations in regard to which the use of a microscope is not required: as, the megascopic constituents of a rock; the megascopic structure of the brain; a megascopic examination of an object. Also macroscopic, macroscopical.

Wiktionary

1. adj. Visible to the naked eye
2. adj. Of, or pertaining to, the megascope

GNU Webster's 1913

1. adj. (Physics) Of or pertaining to the megascope or the projection upon a screen of images of opaque objects.
2. adj. Enlarged or magnified; -- said of images or of photographic pictures, etc.
3. adj. (Geol.) Large enough to be seen; -- said of the larger structural features and components of rocks which do not require the use of the microscope to be perceived. Opposed to microscopic.

WordNet 3.0

1. adj. visible to the naked eye (especially of rocks and anatomical features)