-stasis

DEFINITION of -stasis

-stasis attaches to a root to form nouns or adjectives indicating either (1) the cessation or arrest of flow/movement of something (e.g., hemostasis = stopping of bleeding), (2) the control or regulation of a physiological substance or process (e.g., homeostasis = maintaining stable internal balance), or (3) a pathological stagnation or stoppage (e.g., cholestasis = stoppage of bile flow). The suffix carries a dual clinical meaning — it can describe a desired therapeutic endpoint (e.g., achieving hemostasis during surgery) or an undesirable pathological state (e.g., cholestasis causing jaundice). In oncology, stasis terminology is also borrowed to describe inhibiting tumor cell spread, and -static (adjectival form) signals an agent that stops or inhibits rather than kills (e.g., bacteriostatic vs. bactericidal).

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ETYMOLOGY of -stasis

greek From Greek στάσῐς (stásis) — “a standing still, a posture, a placing,” from the verb ἵστημι (histēmi, “to cause to stand, to place, to set”), from Proto-Indo-European root steh₂- (“to stand”).

The PIE root steh₂- is extraordinarily productive in both Greek and Latin, giving English words like stand, stable, station, static, status, substance, and system. As a medical suffix, -stasis entered English via New Latin medical coinage, first broadly appearing in the 18th-19th centuries.

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Root Breakdown

Component	Meaning	Origin
sta-	Stand, place, stop	Greek ἵστημι (histēmi), “to stand, place”
-sis	State, process, condition	Greek abstract noun suffix ​

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RELATED TERMS to -stasis

-stasis vs. -stalsis: Critical Distinction

Suffix	Meaning	Example
-stasis	Stopping, standing still, controlling	Hemostasis (“stopping blood”)
-stalsis	Contraction, movement	Peristalsis (“circular contractions”) ​

These two are frequently confused due to their similar spelling — keep them straight by remembering stasis = “sta-” like “stationary”* (not moving) vs. stalsis = “stal-” like “propel”* (moving).

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Examples by Category

Hematology / Surgery

Term	Root	Meaning
Hemostasis	hemo- (blood)	Stopping / controlling blood flow; the physiological and surgical process of arresting bleeding
Hemostatic	hemo- + -static	Adjective: “blood-stopping”; also a noun for agents that stop bleeding

Gastroenterology / Hepatology

Term	Root	Meaning
Cholestasis	e- (bile)	Stoppage or impairment of bile flow ​
Cholestatic	chol/e- + -static	Pertaining to bile stasis

Physiology / Endocrinology

Term	Root	Meaning
Homeostasis	o- (same/similar)	Maintenance of stable internal equilibrium
Thermoregulation / Thermostasis	o- (heat)	Regulation and stability of body temperature

Vascular / Dermatology

Term	Root	Meaning
Venous stasis	ven/o- (vein)	Stagnation/slowed flow of venous blood; leads to ulcers, DVT risk
Lymphostasis	o-	Stoppage of lymphatic flow

Microbiology / Pharmacology

Term	Root	Meaning
Bacteriostatic	o- (bacteria)	Agent that stops bacterial growth without killing (vs. bactericidal = kills) ​
Fungistatic	i- (fungus)	Agent that stops fungal growth ​
Cytostatic	o- (cell)	Agent that stops cell growth/division

Oncology

Term	Root	Meaning
Metastasis	Greek meta- (“change, beyond”) + stasis	”Change of standing” — displacement of cancer cells from primary to distant sites ​
Metastatic		Adjective form

Ophthalmology (connecting to prior notes!)

Term	Root	Meaning
Dacryostasis	o- (tear)	Stagnation or obstruction of tear flow ​

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DERIVATIONS of -stasis

TABLE definition AS Definition 
WHERE length(filter(roots, (word) => econtains([[]].roots, word))) > 0 AND file.name !=[[]].file.name
SORT file.name ASC

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Query

TABLE definition AS Definition
FROM #medroot
WHERE length(filter(definition, (word) => econtains([[]].definition, word))) > 0 AND file.name != [[]].file.name

Med roots dictionary Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms