O
O
- ob-
- reverse, inverse, upside down, etc. ("obovatus")
- obes-
- fat ("obesus")
- obfusc-
- cloudy, confused ("obfuscatus")
- obliq-
- oblique, slanting ("obliqua")
- oblong-
- oblong (surprise!) ("oblongifolia" = "oblong leaves")
- occi-
- western ("occidentalis")
- ochr-
- yellowish (_Ochrocarpos_ = "yellow fruit")
- oct-
- referring to the number eight (_Octomeria_ = "eight parts" - an orchid)
- ocul-
- referring to an eye ("oculiforma" = "in the shape of an eye" / "oculatum")
- odont-
- referring to a tooth (_Odontoglossum_ = "toothed tongue")
- -odont(...)
- (_Leontodon_ = "lion's tooth")
- oen-
- referring to a vine, esp. the grape vine; therefore, by ex- tension, WINE (_Oenothera_, the evening primrose, = "wine-scented")
- offic-
- official, recognized (usually from medicine or commerce) ("officinalis")
- -oide(...)
- like unto ("botryoides" = "cluster-like" / "malacoides" = "mallow-like" / "dendroideum" = "tree-like"))
- ole-
- referring to oil (olive) ("oleifera" = "oil-bearing")
- oler-
- referring to a vegetable, edible ("oleracea")
- olig-
- few ("oligocarpa" = "few-fruited")
- oliv-
- referring to an olive ("olivifolia" = "leaves like an olive")
- omni-
- all (kinds)
- onc-
- referring to a barb, a protruberance, a tubercle, a tumor (_Oncidium_ = "little tumor")
- ono-
- referring to a donkey (_Onosma_ = "donkey + smell" - which donkeys supposedly favor) !
- opac-
- shaded ("opacus")
- operc-
- referring to a lid ("operculatus")
- ophio-
- referring to a snake (_Ophiopogon_ = "snake's beard") !
- -opsis
- like unto (_Chilopsis_, "lip-like") ("phalaenopsis" = like a moth")
- orbic-
- round ("orbicularis")
- orch-
- referring to an orchid (or the sexual parts of aflower) - actually, the Gr. word, "orchis" refers to the male gonads ("orchioides" = "like an orchid") oreo- /
- oro-
- referring to mountains (_Oreocereus_ = "mountain cactus" / "oreophilus" = "mountain-loving")
- orient-
- referring to the Orient, eastern ("orientalis")
- ornat-
- showy, adorned, ornate ("ornatus")
- ornith-
- referring to a bird (_Ornithocephalus_ = "bird's head") ("ornithorhyncum" = "bird + snout/beak")
- orth-.
- straight, upright, correct (_Orthocarpus_ = "upright fruit")
- osm-
- referring to an odor (_Osmanthus_ = "fragrant flower")
- -osm(...)
- (_Coprosma_ = "feces + odor")
- ost-
- referring to a bone, therefore hardness (_Osteospermum_ = "bone seed")
- -ot(...)
- referring to an ear (_Leonotis_ = "lion's ear")
- oval-
- oval ("ovalis")
- ovat-
- ovately shaped ("ovata")
- ovi-
- referring to an egg (shape) ("ovifera" = "egg-bearing")
- ox- / oxy-
- sharp,pointed, sour (_Oxalis_, referring to the oxalic acid in the leaves and roots) ("oxycarpa" = sharp, pointed fruit")
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