airtight door
81Airlock Entry — A building architectural element (vestibule) with two airtight doors that reduces the amount of air infiltration and exfiltration when the exterior most door is opened …
82seal — I 1. noun 1) the seal around the bathtub Syn: sealant, sealer, adhesive, caulk, caulking 2) the king put his seal on the letter Syn: emblem, symbol, insignia, device, badge, crest …
83seed bank — /ˈsid bæŋk/ (say seed bangk) noun 1. a store of seeds as a source for their future planting should they become extinct in the natural world. 2. the naturally occurring store of seed conserved in an ecosystem or reserve. There are estimated to be… …
84at — at1 [at; ] unstressed [ ət] prep. [ME < OE æt; akin to Goth, OS, ON at & L ad at, in, to] 1. on; in; near; by: at is the preposition of general (usually static) location, and is replaced by in, on, etc. when a more precise indication of… …
85at. — 1. atmosphere. 2. atomic. 3. attorney. * * * at «at; unstressed uht, iht», preposition. 1. in; on; by; near: »There is someone at the front door. She is at school …
86A.T. — Atlantic time. * * * at «at; unstressed uht, iht», preposition. 1. in; on; by; near: »There is someone at the front door. She is at school. 2. in the direction of; to; …
