1. (of unknown regions) not yet surveyed or investigated
   - chartless, uncharted

See also: unknown

• microevolution
• microfarad
• microfiber
• microfibre
• microfiche
• microfilm
• microflora
• microform
• microfossil
• microgametophyte
• microgauss
• microgeneration
• microglia
• microgliacyte
• micrognathia
• microgram
• Microgramma
• Microgramma-piloselloides
• micrograph
• micrography
• microgravity
• microhabitat
• Microhylidae
• microinstruction
• microlending