Synonym: airiness, irrepressibility, perkiness. Similar words: buoyant, annoyance, clairvoyance, buoy, flamboyant, clairvoyant, abeyance, conveyance. Meaning: ['bɔɪənsɪ] 
n. 1. cheerfulness that bubbles to the surface 2. the property of something weightless and insubstantial 3. the tendency to float in water or other liquid 4. irrepressible liveliness and good spirit.
n. 1. cheerfulness that bubbles to the surface 2. the property of something weightless and insubstantial 3. the tendency to float in water or other liquid 4. irrepressible liveliness and good spirit. 
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61 It also studied a typical thermoelectric couple, got the gas buoyancy distribution and best reed contraction.
62 Sperm whales' heads are filled with a mysterious substance called spermaceti. Scientists have yet to understand its function, but believe it may help the animal regulate its buoyancy.
63 The buoyancy and buoyancy regulation are very important to the dominance of blue - green algae.
More similar words: buoyant, annoyance, clairvoyance, buoy, flamboyant, clairvoyant, abeyance, conveyance, fancy, vacancy, tenancy, piquancy, vibrancy, pregnancy, stagnancy, redundancy, ascendancy, accountancy, discrepancy, conservancy, occupancy rate, life expectancy, royal, loyal, aryan, banyan, voyage, by and by, royalty, royalist.