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R
- rachis
- in botany,
axis
- radiculitis
- disorders of the roots
of the nerves
- radix
- in botany,
root
- rami-
- in botany, pertaining
to branches
- ramus
- in botany,
branch
- ranunculus
dermatitis
- type of dermatitis
resulting from contact of skin with plants of the genus
Ranunculus
- Raynaud's
disease
- neurovascular disorder
characterized by local vascular contractions resulting in
attacks of decreased blood flow to the extremities upon
exposure to cold
- rectification
- purification, usually
through repeated steam distillations
- resin
- amorphous brittle
substance consisting of the hardened secretion of a various
plants, typically derived from the oxidation of
terpenes
- retina
- receptive field of the
eye
- retinal edema
- accumulation of fluid
in the retina
- rhagades
- chaps, cracks, or
fissures
- rheological
- deformative flow of
materials, usually blood
- rheumatism
- general term applied to
conditions of pain, or inability to articulate, various
elements of the musculoskeletal system
- rhinitis
- inflammation of the
nasal mucous membrane
- rhizome
- in botany, underground
stem
- rhodo-
- in botany,
rose-colored
- rickets
- vitamin-D deficiency
characterized by abnormal calcification of bone
tissues
- roborant
- strengthening agent,
tonic
- Roemheld's
syndrome
- gastro-cardiac
syndrome
- root
- an absorbing and
anchoring organ of the plant, usually developed from the
radicle and growing downward
- roseus
- in botany,
rosy
- rubefacient
- reddening agent,
usually in reference to a counter-irritant
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