English dictionary of medical terms (78)
Back to welcome
Go to the
previous part of the dictionary
- No:1540 - rhonchus
(L.; Gr. rhonchos a snoring sound) a rattling in the throat; also
a dry, coarse rale in the bronchial tubes, due to a partial
- No:1541 - rickets
(thought to be a corruption of Gr. rhachitis a spinal complaint) a
condition caused by deficiency of vitamin D, especially in infancy
and childhood, with disturbance of normal ossification. The
disease is marked by bending and distortion of the bones under
muscular action, by the formation of nodular enlargements on the
ends and sides of the bones, by delayed closure of the fontanelles,
pain in the muscles, and sweating of the head. Vitamin D and
sunlight together with an adequate diet are curative, provided that
the parathyroid glands are functioning properly.
- No:1542 - rigidity
(L. rigiditas; rigidus stiff) stiffness or inflexibility, chiefly
that which is abnormal or morbid; rigor.
- No:1543 - risk factor
a clearly defined occurrence or characteristic that has been
associated with the increased rate of a subsequently occurring
- No:1544 - risk patient
patient who is at risk, because of his/her behaviour or because of
the type of person he/she is.
- No:1545 - routinely
usual, habitual, regular
- No:1546 - rubella
(L., from rubellus reddish, from ruber red) an acute, usually
benign, infectious disease caused by a togavirus and most often
affecting children and nonimmune young adults, in which the virus
enters the respiratory tract via droplet nuclei and spreads to the
lymphatic system. It is characterized by a slight cold, sore
throat, and fever, followed by enlargement of the postauricular,
suboccipital, and cervical lymph nodes, and the appearances of a
fine pink rash that begins on the head and spreads to become
generalized. Called also German measles, roetln, röteln, and
three-day measles, and rubeola in French and Spanish.
- No:1547 - rupture
1. forcible tearing or disruption of tissue. 2. a hernia.
- No:1548 - salicylism
- a group of commonly occurring toxic effects of excessive dosage
with salicylic acid or its salts, usually marked by tinnitus,
nausea, and vomiting.
- No:1549 - saline
(L. salinus; sal salt) salty; of the nature of a salt; containing
a salt or salts.
- No:1550 - salivation
(L. salivatio) 1. the secretion of saliva. 2. ptyalism (=
excessive flow of saliva).
- No:1551 - salpingitis
(salpingo- + itis inflammation) 1. inflammation of the uterine
tube. 2. inflammation of the auditory tube.
- No:1552 - saluric
(MISPRINT! replace by: saluretic.)
No:1552 - saluretic
pertaining to, characterized by, or promoting saluresis (= the
excretion of sodium and chloride ions in the urine).
- No:1553 - saprophyte
(sapro- + Gr. phyton plant) a saprophytic (= whose nutrition
involves uptake of dissolved organic material from decaying plant
or animal matter) organism.
- No:1554 - sarcoma
(sarco- + -oma) a tumour made up of a substance like the embryonic
connective tissue; tissue composed of closely packed cells embedded
in a fibrillar or homogeneous substance. Sarcomas are often highly
- No:1555 - scabies
(L., from scabere scratch) a contagious dermatitis of humans and
various wild and domestic animals caused by the itch mite,
Sarcoptes scabiei, transmitted by close contact, and characterized
by a papular eruption over tiny, raised sinuous burrows (cuniculi)
produced by digging into the upper layer of the epidermis by the
egg-laying female mite, which is accompanied by intense pruritus
and sometimes associated with eczema from scratching and secondary
bacterial infection. Called also the itch and seven-year itch.
- No:1556 - scarlatina
(L. 'scarlet') scarlet fever.
- No:1557 - schizophrenia
(schizo + Gr. phrn mind + -ia) (DSM III-R) a mental disorder or
heterogeneous group of disorders (the schizophrenias or
schizophrenic disorders) comprising most major psychotic disorders
and characterized by disturbances in form and content of thought
(loosening of associations, delusions, and hallucinations) mood
(blunted, flattened, or inappropriate affect), sense of self and
relationship to the external world (loss of ego boundaries,
dereistic thinking, and autistic withdrawal), and behaviour
(bizarre, apparently purposeless, and stereotyped activity or
inactivity). The definition and clinical application of the
concept of the concept of schizophrenia have varied greatly. The
DSM III-R criteria emphasize marked disorder of thought (delusions,
hallucinations, or other thought disorder accompanied by disordered
affect or behaviour), deterioration from a previous level of
functioning, and chronicity (duration of more than 6 months), thus
excluding from this classification conditions referred to by others
as acute, borderline, simple, or latent schizophrenia. Originally
called dementia praecox and characterized as a psychosis with
adolescent onset and a chronic course ending in deterioration. The
term schizophrenia was introduced by Bleuler because neither early
onset nor terminal deterioration is an essential feature; he
emphasized the splitting and lack of personality integration seen
in the disorder.
- No:1558 - sciatica
a syndrome characterized by pain radiating from the back into the
buttock and into the lower extremity along its posterior or lateral
aspect, and most commonly caused by prolapse of the intervertebral
disk; the term is also used to refer to pain anywhere along the
course of the sciatic nerve.
- No:1559 - sclera
(L.; Gr. skleros hard) (NA) the tough white outer coat of the
eyeball, covering approximately the posterior five-sixths of its
surface, and continuous anteriorly with the cornea and posteriorly
with the external sheath of the optic nerve.
the next part of the dictionary