semi
1 of 4noun (1)
ˈse-ˌmī 
also
-mē plural semis
: semifinal —often used in plural
semi
2 of 4noun (2)
ˈse-ˌmī
also
-mē plural semis
: semitrailer
semi
3 of 4noun (3)
ˈse-mē
also
-ˌmī plural semis
chiefly British
: a semidetached house
semi-
4 of 4prefix
ˌse-mē,
-ˌmī,
-mi
1
a
: precisely half of:
(1)
: forming a bisection of
semidiameter
(2)
: being a usually vertically bisected form of (a specified architectural feature)
semidome
b
: half in quantity or value : half of or occurring halfway through a specified period of time
semiannual
semimonthly
compare bi- 2
: to some extent : partly : incompletely
semicivilized
semi-independent
semidry
compare demi-, hemi- 3
a
: partial : incomplete
semiconsciousness
semidarkness
b
: having some of the characteristics of
semiporcelain
c
: quasi-
semigovernmental
semimonastic
Word History
Etymology
Noun (3)
short for semidetached
Prefix
Middle English, from Latin; akin to Old High German sāmi- half, Greek hēmi-
First Known Use
Noun (1)
1942, in the meaning defined above
Noun (2)
1942, in the meaning defined above
Noun (3)
1912, in the meaning defined above
Phrases Containing semi
Kids Definition
semi-
prefix
1
: half
semicircle
2
: partly : not completely
3
: partial
semis
noun
as in duplexes
Synonyms & Similar Words
Relevance
- duplexes
- triplexes
- mansions
- townhomes
- bungalows
- ranches
- cottages
- town houses
- ranch houses
- homesteads
- tract houses
- farmhouses
- villas
- chalets
- saltboxes
- cabins
- estates
- apartments
- split levels
- casitas
- hovels
- palaces
- hooches
- castles
- shacks
- manor houses
- manors
- flats
- housings
- manses
- McMansions
- haciendas
- huts
- granges
- shanties
- condos
- shelters
- residencies
- parsonages
- dorms
- rooms
- condominiums
- dormitories
- barracks
- tenement houses
- tenements
- vicarages
- châteaus
- nests
- châteaux
- penthouses
- accommodations
- countryseats
- rectories
- apartment houses
- billets
- halls
- walk-ups
- hootches
- hermitages
- hutches
- boardinghouses
- suites
- salons
- lodgements
- lodging houses
- flophouses
- condominia
- rooming houses
- lodgments
