8-letter words containing si
- andesite — a fine-grained tan or grey volcanic rock consisting of plagioclase feldspar, esp andesine, amphibole, and pyroxene
- anemosis — spacing between the annual rings in wood that is caused by strong winds bending the tree trunk
- anoopsia — a form of squint in which the eye turns upwards
- ansi x12 — (standard) Standards defining the structure, format, and content of business transactions conducted through Electronic Data Interchange (EDI). ANSI X12 is produced by the committee ASC X12, supported by the Data Interchange Standards Association, Inc. (DISA).
- anthesis — the time when a flower becomes sexually functional
- anuresis — inability to urinate even though urine is formed by the kidneys and retained in the urinary bladder
- aphasiac — pertaining to or affected with aphasia.
- apneusis — protracted gasping inhalation followed by short inefficient exhalation, which can cause asphyxia
- apoapsis — the point in an elliptical orbit which is farthest from the object being orbited
- apodosis — the consequent of a conditional statement, as the game will be cancelled in if it rains the game will be cancelled
- apositia — a lack of appetite
- apositic — causing apositia
- apposing — Present participle of appose.
- apposite — Something that is apposite is suitable for or appropriate to what is happening or being discussed.
- arc sine — the angle, measured in radians, that has a sine equal to a given number. Symbol: sin −1. Abbreviation: arc sin, arcsin;
- arcesius — a son of Zeus and Euryodia, father of Laertes, and grandfather of Odysseus.
- argosies — Plural form of argosy.
- arisings — Waste products or byproducts of an industrial process.
- arousing — causing sexual excitement
- artesian — noting, pertaining to, or characteristic of an artesian well.
- as-sirat — the correct path of religion
- assassin — An assassin is a person who assassinates someone.
- assidean — a member of a sect, characterized by its religious zeal and piety, that flourished in the 2nd century b.c. during the time of the Maccabees and vigorously resisted the Hellenization of Jewish culture and religion.
- assiento — a slave trade treaty between other countries and Spain which allowed other countries to supply slaves to Spanish dependencies or colonies
- assignat — the paper money issued by the Constituent Assembly in 1789, backed by the confiscated land of the Church and the émigrés
- assigned — Simple past tense and past participle of assign.
- assignee — a person to whom some right, interest, or property is transferred
- assigner — to give or allocate; allot: to assign rooms at a hotel.
- assignor — a person who transfers or assigns property
- assinine — Alternative spelling of asinine.
- assisted — to give support or aid to; help: Please assist him in moving the furniture.
- assister — One who assists; an assistant or helper.
- assistor — to give support or aid to; help: Please assist him in moving the furniture.
- at sight — as soon as seen
- atosiban — (medicine) A medication, that inhibits oxytocin and vasopressin, used to halt premature labour.
- autopsic — relating to autopsy
- aversion — If you have an aversion to someone or something, you dislike them very much.
- aversity — The state or condition of being averse.
- aversive — tending to dissuade or repel
- avoision — the non-payment of tax which cannot be classified as either avoidance or evasion
- avulsion — a forcible tearing away or separation of a bodily structure or part, either as the result of injury or as an intentional surgical procedure
- avulsive — Of or pertaining to an avulsion.
- baby-sit — to act or work as a baby-sitter
- babysits — Third-person singular simple present indicative form of babysit.
- backside — Your backside is the part of your body that you sit on.
- ballsier — Comparative form of ballsy.
- banausic — merely mechanical; materialistic; utilitarian
- banksias — Plural form of banksia.
- bankside — the sloping side of any bank
- baptisia — a genus of wild flower native to North America