rhizinomorph
A root-like structure similar to a rhizine that is not involved as an attachment organ.

rhizinomorphs
plural of rhizinomorph

rhizocaul
The rootstock of a polyp.

rhizocorm
A fleshy rhizome, like those of Iris or Acorus.

rhizocorms
plural of rhizocorm

rhizoderm
Synonym of rhizodermis.

rhizodermis
The outermost primary cell layer of the root.

rhizopathies
plural of rhizopathy

rhizopathy
A pathologic condition in nerve roots.

rhizoplast
A fibril connecting the blepharoplast with the nucleus in a flagellated cell

rhizoplasts
plural of rhizoplast

rhizotomies
plural of rhizotomy

rhizotomy
The surgical procedure of cutting the anterior or posterior spinal nerve roots in order to relieve pain, or reduce muscle spasms.

rhodocyte
erythrocyte; red blood cell

rhodocytes
plural of rhodocyte

rhogocyte
A pore cell, in molluscs, that produces hemocyanin.

rhogocytes
plural of rhogocyte

rhomboidei
plural of rhomboideus

rhomboideus
Any of the rhomboid muscles.

rhynchodaeum
A cavity in some gastropods that contains the proboscis.

rhynchodaeums
plural of rhynchodaeum

rhythmology
The analysis and treatment of abnormal heart rhythms

rhytid
Any undesirable wrinkle in the skin.

rhytide
A wrinkle, typically a facial wrinkle secondary to muscular contraction patterns in the skin.

rhytides
plural of rhytide

rhytids
plural of rhytid

ribeye
Ellipsis of ribeye steak, a boneless ribsteak; a cut of steak from the beef rib.
Synonym of ribsteak (an unfilleted ribsteak, with the bone-in)

ribeyes
plural of ribeye; Ellipsis of ribeye steaks.

riblessness
Absence of ribs.

riboforin
Alternative form of ribophorin.

riboforins
plural of riboforin

riboleukogram
The graphical representation of leukocyte RNA circulating in the blood after trauma

riboleukograms
plural of riboleukogram

ribophorin
Any of a group of transmembrane glycoproteins located in the membrane of the rough endoplasmic reticulum, but absent in the membrane of the smooth endoplasmic reticulum.

ribophorins
plural of ribophorin

ribsteak
A beefsteak cut from the primal rib area of a bovine, with the rib bone attached to the steak cut. A bone-in rib steak.
A similar cut from another animal.
A bone-in or boneless cut of steak, either the rib or ribeye steak.

ribsteaks
plural of ribsteak

ridgeback
Any of three breeds of dog with a distinctive ridge of hair that runs against the grain of the rest of the coat along the spine: the Rhodesian Ridgeback, the Phu Quoc Ridgeback and the Thai Ridgeback.

ridgebacks
plural of ridgeback

ridgebone
The backbone or spine.

ridgebones
plural of ridgebone

ringbone
A type of osteoarthritis affecting any of several bones (particularly the coffin joint or pastern) of a horse's leg or foot, marked by bone growth.

ringxiety
The anxiety resulting from the mistaken belief that one's cell phone or mobile is ringing or vibrating.

rippchen
A German form of spare ribs

ripplon
A quantized capillary-tension wave at the surface of a liquid

ripplons
plural of ripplon

risibles
The muscles and other organs used in laughing.

risorii
plural of risorius

risorius
A narrow band of facial muscle arising from the fascia over the masseter and inserting into the tissues at the corner of the mouth, which it draws laterally, as is used when smiling.

roader
A vessel sheltering in a roadstead.
A roadster.

roaders
plural of roader

rollnecks
plural of rollneck

rosebudding
The action or practice of letting one's rectum prolapse from the anus as an extreme sexual practice.

rosetting
A phenomenon where erythrocytes are arranged around a central cell to form a cluster that looks like a flower.

rosettings
plural of rosetting

rostromedulla
rostral medulla

rotablation
rotary ablation (as a technique to remove plaque from an artery

rotablations
plural of rotablation

rotoscoliosis
A complex spinal deformity characterized by both lateral curvature (scoliosis) and rotation of the vertebrae.

rubedo
A diffused redness of the skin; blushing or flushing.
A "reddening" process, the fourth and final major stage of the alchemical magnum opus.

ruga
A fold, crease or wrinkle.

rugae
plural of ruga

rumen
The first compartment of the stomach of a cow or other ruminants.

rumenotomies
plural of rumenotomy

rumenotomy
surgical incision into the rumen, or first stomach, of a ruminant

ruminoreticula
plural of ruminoreticulum

ruminoreticulum
The rumen together with the reticulum of a ruminant stomach

sacra
plural of sacrum

sacrae
plural of sacra

sacrococcyx
A bone formed by fusion of the sacrum and coccyx

sacrocolpopexies
plural of sacrocolpopexy

sacrocolpopexy
Surgical fixation of the prolapsed uterus or vagina to the sacrum, as a surgical procedure for repairing pelvic organ prolapse.

sacroiliac
Relating to the sacrum and ilium, or to the region of the lower back where they are located.

sacroiliacs
plural of sacroiliac

sacrolemma
Misspelling of sarcolemma.

sacrolumbalis
A muscle that is inserted, by flattened tendons, into the inferior borders of the angles of the lower six to nine ribs.

sacrospinalis
The erector spinae, a muscle group of the back in humans and animals.

sacrum
A large triangular bone at the base of the spine, located between the two ilia (wings of the pelvis) and formed from vertebrae that fuse in adulthood.

sacrums
plural of sacrum

saenghwang
A type of free reed mouth organ from Korea, usually having 17 pipes.

sagittocyst
A capsule having a spindle-like needle produced by epidermal cells of certain turbellarians.

sagittocysts
plural of sagittocyst

salcional
Alternative form of salicional.

salcionals
plural of salcional

salicet
A pipe organ stop of 4-foot or 2-foot pitch.

salicets
plural of salicet

salicional
A labial pipe organ stop of eight-foot pitch.

salicionals
plural of salicional

salisphere
salivary gland stem cell

salispheres
plural of salisphere

salpingoovariectomies
plural of salpingoovariectomy

salpingoovariectomy
Alternative form of salpingovariectomy.

salpingopharyngei
plural of salpingopharyngeus

salpingopharyngeus
A muscle of the pharynx that arises from the inferior part of the Eustachian tube near its opening and passes downward to the constrictors of the pharynx, joining the posterior part of the palatopharyngeus.

salpingovariectomies
plural of salpingovariectomy

salpingovariectomy
Synonym of ovariosalpingectomy

salvatella
The dorsal vein of the little finger, bleeding from which was anciently held to be a treatment for melancholy.

salvatellae
plural of salvatella

sanies
a thin mixture of pus and blood serum discharged from a wound; ichor

saphena
A prominent vein or nerve, the saphenous vein

saphenae
plural of saphena

saphenas
plural of saphena

saphenectomies
plural of saphenectomy

saphenectomy
Removal of a saphenous vein

saprodontia
Tooth decay; caries.

sarcenchyme
One of the soft tissues of sponges.

sarcoblast
A minute yellowish body present in the interior of certain rhizopods, thouth to play a role in nutrient storage or in the metabolism of the cell.
An embryonic cell that can differentiate into myoblasts.

sarcoblasts
plural of sarcoblast

sarcode
A remedy made from healthy living tissue.
Synonym of protoplasm.

sarcolemma
A thin cell membrane that surrounds a striated muscle fibre.

sarcolemmas
plural of sarcolemma

sarcolemmata
plural of sarcolemma

sarcolysis
The lysis or disintegration of muscular tissue

sarcomere
The contractile unit of the myofibril of a striated muscle.

sarcomeres
plural of sarcomere

sarcoplasm
The interfibrillar cytoplasm of striated muscle

sarcoplasms
plural of sarcoplasm

sarcoplast
An interstitial muscle cell

sarcoplasts
plural of sarcoplast

sarcosphere
A spherical, clonal expanding colony of stem cells

sarcospheres
plural of sarcosphere

sarcotubule
The sarcoplasmic reticulum of striated muscle cells

sarcotubules
plural of sarcotubule

sarin
The nerve gas O-isopropyl methylphosphonofluoridate, used as a chemical weapon.

satellitoses
plural of satellitosis