spiral nebula
— Noun
– English
～ a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center
spiral
— Verb
– English
～ to wind or move in a spiral course; "the muscles and nerves of his fine drawn body were coiling for action"; "black smoke coiling up into the sky"; "the young people gyrated on the dance floor"
spiral
— Verb
– English
～ move in a spiral or zigzag course
spiral
— Verb
– English
～ form a spiral; "The path spirals up the mountain"
spiral-shelled
— Adjective
– English
～ having a shell that forms a spiral
spiral
— Adjective
– English
～ in the shape of a coil
spiraling
— Adjective
– English
～ in the shape of a coil
spirally
— Adverb
– English
～ with spirals; "spirally fluted handles"
spirant
— Noun
– English
～ a continuant consonant produced by breath moving against a narrowing of the vocal tract
spirant
— Adjective
– English
～ of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')
Spiranthes cernua
— Noun
– English
～ an orchid of the genus Spiranthes having tall erect densely flowered spiraling clusters of creamy white vanilla-scented flowers; widely distributed especially in low damp places of eastern and central North America
Spiranthes romanzoffiana
— Noun
– English
～ orchid having dense clusters of gently spiraling creamy white flowers with 2 upper petals forming a hood; western North America
Spiranthes porrifolia
— Noun
– English
～ similar to Spiranthes romanzoffiana; western United States
Spiranthes spiralis
— Noun
– English
～ European orchid having shorter racemes of strongly spiraling snow-white flowers
Spiranthes
— Noun
– English
～ large cosmopolitan genus of white-flowered terrestrial orchids
spire
— Noun
– English
～ a tall tower that forms the superstructure of a building (usually a church or temple) and that tapers to a point at the top
spirea
— Noun
– English
～ any rosaceous plant of the genus Spiraea; has sprays of small white or pink flowers
spirea
— Noun
– English
～ a Japanese shrub that resembles members of the genus Spiraea; widely cultivated in many varieties for its dense panicles of flowers in many colors; often forced by florists for Easter blooming
spirilla
— Noun
– English
～ any flagellated aerobic bacteria having a spirally twisted rodlike form