seafloors
plural of seafloor

sealab
An underwater laboratory.

sealabs
plural of sealab

sealore
Knowledge, teaching, science, or study of the sea.

seamark
Any elevated object on land which serves as a guide to mariners, such as a hill or steeple.
A beacon, buoy, etc. placed in the sea to aid navigation.

seamarks
plural of seamark

seamount
An underwater mountain with a prominence of more than 1,000 meters, which does not breach the surface of the water.

seamounts
plural of seamount

seapiece
A picture representing a scene at sea; a marine picture.

seapieces
plural of seapiece

seaquake
A hydrostatic pressure disturbance caused by an earthquake or volcano in the seabed.

seaquakes
plural of seaquake

searchroom
A room where the public can access archives.

searchrooms
plural of searchroom

seasand
Sand of the sea floor or seashore.
A sandy seabeach.

seasands
plural of seasand

seascape
A view of the sea.
A piece of art that depicts the sea or shoreline.

seascapes
plural of seascape

seascraper
A tall building that is built underwater; an underwater skyscraper.

seascrapers
plural of seascraper

seashine
The shining of light reflected from the ocean.

seashore
The coastal land bordering a sea or an ocean.
The foreshore, the strip of land between low water and high water.

seashores
plural of seashore

seaspace
A designated portion of the sea for naval use.

seaspaces
plural of seaspace

seastead
A permanent dwelling or settlement constructed at sea, outside the territory claimed by any national government.

seasteading
The creation of permanent dwellings at sea, especially outside the territory claimed by any national government.

seasteads
plural of seastead

seastorm
A thunderstorm, waterspout, tropical storm, or other storm over an ocean.

seastorms
plural of seastorm

seastrand
Synonym of seashore.

seastrands
plural of seastrand

seatment
The location where a person, facility, or community is established; settlement.
The act or manner in which something has been seated; placement.
The location or facilities provided for someone or something to be seated in.
The act of sitting.

seatments
plural of seatment

seaview
Alternative form of sea-view.

seaware
Flotsam; articles cast up by the sea.
A kind of kelp; sea girdles.

seawave
A typical wave formed by the interaction of the wind with the ocean's surface.
A large wave resulting from an underwater seismic event.

seawaves
plural of seawave

secess
retirement; retreat; secession

sechach
The roof of a sukkah, made up of leaves or branches.

secondspace
Alternative form of Secondspace.

secretariat
The office or department of a government secretary.
A kind of dicastery within the Roman Curia.
A subdivision within an organisation or a company that deals with office management and/or administrative tasks such as handling correspondence and telephone calls, scheduling appointments, administering invoices, etc., often attached to specific executives or specific departments

secretariate
Alternative spelling of secretariat.

secretariates
plural of secretariate

secretariats
plural of secretariat

sectio
A section or cutting; a subdivision or segment.

sectionalism
Promoting the good of one division, department or subgroup over that of the whole.
Promoting the good of one region over that of the nation.

sectionalisms
plural of sectionalism

sectiones
plural of sectio

sedeprivationism
The school of thought, in Roman Catholicism, that the popes of the new religion of Vatican II council have been defective or deprived of the infallible teaching authority of the office because of their Modernist intent and remain in pope elect status until rencanting the innovations.

sedes
The position a word or phrase occupies within the meter.

sedile
Alternative form of sedilium (“type of seat in a church”).

sediles
plural of sedile

sedilium
One of a row of seats in an Ancient Roman amphitheatre.
A seat in the chancel of a church near the altar, for the officiating clergyman.

seedbed
Ground prepared for the planting of seeds.
A place conducive to development and attainment.

seedbeds
plural of seedbed

seedplot
A plot of land where seeds are sown.
The place where something originates.

seedplots
plural of seedplot

seiche
A short-term standing wave oscillation of the water level in a lake, or other confined body of water such as a fjord, characteristic of its geometry.

seiches
plural of seiche

seigneurie
An area governed by a seigneur (French noble).
The estate of a seigneur.
The official residence of a Seigneur.

seigneuries
plural of seigneurie

seigneury
Alternative form of seigneurie.

seignioralties
plural of seignioralty

seignioralty
The territory or authority of a seignior, or lord.

sejarah
history (as a school subject)

sejmik
A local or regional parliament in Poland; a dietine.

sejmiki
plural of sejmik

sejmiks
plural of sejmik

sekoi
plural of sekos

sekos
A sacred enclosure, sanctuary or cella in an ancient Greek temple.

selamlik
Part of a Turkish palace or house kept for men.

selamliks
plural of selamlik

selenizone
An anatomical structure in the shells of some families of sea snails, consisting of a spiral band of growth lines on the shell surface.

selenizones
plural of selenizone

selfquenching
The quenching of an excited atom (etc) by interaction with another of the same type of atom in the ground state

sella
Synonym of sella turcica.

sellae
plural of sella

semester
Half of a school year (US) or academic year such as autumn or spring semester.
A period or term of six months.

semestering
Operation as a semester school.

semesters
plural of semester

semestre
Obsolete form of semester.

semestres
plural of semestre

semibasement
A basement which is only partially below ground level.

semibasements
plural of semibasement

semicolonies
plural of semicolony

semicolony
A partly colonial settlement.

semidecision
A technique in which the necessary conditions for a state are identified and then a proof that these conditions cannot be satisfied is produced.

semidesert
A semiarid region, approaching desert.

semideserts
plural of semidesert

semiminim
A quarter note, or crotchet.

semiminims
plural of semiminim

semislug
A land gastropod whose shell is too small to retract into, but not vestigial.

semislugs
plural of semislug

semisomnia
A chronic state of low-grade exhaustion caused by too little or fitful sleep.

semistate
A geopolitical region with some characteristics of a state.

semistates
plural of semistate

semita
A fasciole of a spatangoid sea urchin.

semitae
plural of semita

semuncia
A bronze coin minted during the Roman Republic, valued at one twenty-fourth of an as.

semunciae
plural of semuncia

senate
In some bicameral legislative systems, the upper house or chamber.
A group of experienced, respected, wise individuals serving as decision makers or advisors in a political system or in institutional governance, as in a university, and traditionally of advanced age.
In Germany, the executive branch of government in the city states of Berlin, Bremen, and Hamburg; the governments of cities that were part of the Hanseatic League; and the bench in a higher appellate court.

senates
plural of senate

senioritis
A tendency of seniors in high school or college to skip class or slack off due to a desire to move on, or because they have already been accepted by a college and their further academic performance is no longer as relevant.

sentine
A place for dregs and dirt; a sink; a sewer.

sentines
plural of sentine

sentiocentrism
A viewpoint or theory that places sentient beings at the center of something, giving preference to sentient beings above all other considerations.