All Words Glossary

Glossary of Plants Terms
beginning with letter O
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oak Tweet Definition of oak Like Definition of oak on Facebook
noun
  1. (countable) A tree of the genus Quercus, bearing acorns and having lobed leaf, leaves.
  2. (uncountable) The wood of the oak.
  3. (colour) a rich brown colour, like that of oak wood.
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adjective
  1. Made from the wood of the oak tree
  2. (colour) of a rich brown colour, like that of oak wood.
oat Tweet Definition of oat Like Definition of oat on Facebook
noun
  1. A widely cultivated cereal grass, Avena sativa.
  2. The seeds of the oat, harvested as a food crop. Used also in form oats.
okra Tweet Definition of okra Like Definition of okra on Facebook
noun
  1. the annual plant, Hibiscus esculentus, of Ethiopian origin, grown for its edible pods.
Olive Tweet Definition of Olive Like Definition of Olive on Facebook
nounSeeolive category:Female given names proper noun
  1. A female given name.
onion Tweet Definition of onion Like Definition of onion on Facebook
noun
  1. a monocotyledonous plant of genus Allium allied to garlic, used as vegetable and spice.
  2. (baseball) (slang) an 1800s baseball term meaning the ball
  3. (context, colloquial, chiefly, archaic) A person from Bermuda or of Bermudian descent.
orach Tweet Definition of orach Like Definition of orach on Facebook
noun
  1. any of several plants, of the genus Atriplex, found in dry habitats, that have edible leaves resembling spinach
Orange Tweet Definition of Orange Like Definition of Orange on Facebook
proper noun
  1. A town in France.
  2. The name of the Dutch Royal House.
  3. Prince or Princess of Orange. Title of the first-born to the Dutch Royal House.
adjective
  1. Relating to the Orange Order.
orange blossom Tweet Definition of orange blossom Like Definition of orange blossom on Facebook
noun
  1. The white flower of the orange tree (i, Citrus sinensis).
orchid Tweet Definition of orchid Like Definition of orchid on Facebook
noun
  1. a plant of the orchid family, bearing unusually-shaped flowers of beautiful colours.
  2. (colour) a light blue, bluish-red, violet-red or purple color, colour.
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adjective
  1. (colour) having a light purple colour.
orchidaceous Tweet Definition of orchidaceous Like Definition of orchidaceous on Facebook
adjective
  1. (botany) Of or pertaining to orchid, orchids.
In keeping with the orchidaceous theme of the wedding, the decorator draped the walls with lavenders and pinks.
  1. Characterized by ostentatiousness; showy.
The fashion press regarded her red carpet attire with derision, calling it orchidaceous and overly designed.
oregano Tweet Definition of oregano Like Definition of oregano on Facebook
noun
  1. A herb of the mint family, Origanum vulgare, having aromatic leaf, leaves.
  2. The leaves of this plant used in flavouring food.
Oregon grape Tweet Definition of Oregon grape Like Definition of Oregon grape on Facebook
noun (wikipedia, Oregon-grape)
  1. An evergreen shrub (Mahonia aquifolium) native to the northwestern United States and southwestern Canada, having broadly serrated, glossy leaves and clusters of yellow flowers that develop into dark bluish-purple fruits. Also called tall Oregon grape.
  2. Any of various related shrubs of the Mahonia genus, also known by names including dwarf Oregon grape, Cascade Oregon grape, and creeping Oregon grape.
orris Tweet Definition of orris Like Definition of orris on Facebook
noun
  1. any of several irises that have a fragrant root, especially Iris germanica (variety florentina)
  2. the fragrant root of such an iris; the orrisroot
osier Tweet Definition of osier Like Definition of osier on Facebook
noun
  1. A kind of willow (Salix viminalis) growing in wet places in Europe and Asia, and introduced into North America. It is considered the best of the willows for basket work. The name is sometimes given to any kind of willow.
  2. One of the long, pliable twigs of this plant, or of other similar plants.
    • 1952, L.F. Salzman, Building in England, p. 188:
    • :Wattling consists of a row of upright stakes the spaces between which are more or less filled by interweaving small branches, hazel rods, osiers, reeds, thin strips of wood, or other pliant material.
Otaheite apple Tweet Definition of Otaheite apple Like Definition of Otaheite apple on Facebook
noun
  1. A fruit native to Pacific islands such as Tahiti.
  2. The tree that bears this fruit.

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