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servo (2)
servomechanism
servomotor
sesame
sesame oil
sesamoid
Sesotho
sesqui-
sesquicentennial
sesquipedalian
sess.
sessile
sessile oak
session
sesterce
sestertium
sestet
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sesquicentennial

sesquicentennial [ séskwi sen ténni əl ] or sesquicentenary [ séskwi sen tnəri, séskwi sen ténnəri ]


noun  (plural sesquicentennials) (plural sesquicentenaries)
Definition:
 
1. 150th anniversary: a 150th anniversary or the celebration of one

2. 150 years: a period of 150 years



adjective 
Definition:
 
occurring every 150 years: relating to or happening after a period of 150 years


sesquicentennially adverb
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