Synonyms and Antonyms for A-horizon

1. horizon (n.)

the line at which the sky and Earth appear to meet

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2. horizon (n.)

the range of interest or activity that can be anticipated

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3. A (n.)

a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

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4. A-horizon (n.)

the top layer of a soil profile; usually contains humus

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5. horizon (n.)

a specific layer or stratum of soil or subsoil in a vertical cross section of land

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6. horizon (n.)

the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth

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7. A (n.)

the 1st letter of the Roman alphabet

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8. A (n.)

the blood group whose red cells carry the A antigen

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9. A (n.)

one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)

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10. A (n.)

the basic unit of electric current adopted under the Systeme International d'Unites

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