noun, plural hy·pos·ta·ses [hahy-pos-tuh-seez, hi-].
¹ Metaphysics.
ᵃ something that stands under and supports; foundation.
ᵇ the underlying or essential part of anything as distinguished from attributes; substance, essence, or essential principle.
SEE SYNONYMS FOR horticulture ON THESAURUS.COM
noun
¹ the cultivation of a garden, orchard, or nursery; the cultivation of flowers, fruits, vegetables, or ornamental plants.
² the science and art of cultivating such plants.