megascopic

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Macroscopic.

from The Century Dictionary.

• 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.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Physics) Of or pertaining to the megascope or the projection upon a screen of images of opaque objects.
• adjective Enlarged or magnified; -- said of images or of photographic pictures, etc.
• adjective (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Visible to the naked eye
• adjective Of, or pertaining to, the megascope

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective visible to the naked eye (especially of rocks and anatomical features)