apexnoun [ C ]
uk/ˈeɪ.peks/us/ˈeɪ.peks/plural apexes or apices uk/ˈeɪ.pɪ.siːz/usapex noun [ C ] (HIGHEST POINT)
specialized mathematics the highest point or top of a shape or object:
the apex of a triangle/pyramid
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Edges & extremities of objects
- apices
- bevel
- border
- bottom
- brim
- brink
- crest
- edge
- fringe
- front
- head
- palm-fringed
- peripheral
- periphery
- rim
- skirt
- surmount
- tip
- topmost
- vertex
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apex noun [ C ] (SUCCESS)
figurative the highest point or most successful part of something:
He reached the apex of his career during that period.
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Higher and lower points of achievement
- apogee
- capstone
- climax
- consummation
- fruition
- height
- heyday
- high point
- high water mark
- Indian summer
- nadir
- peak
- pinnacle
- plumb
- plumb the depths idiom
- rock bottom
- trough
- vertex
- zenith
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apex noun [ C ] (BODY ORGAN)
specialized medical the pointed end of an organ:
A chest x-ray showed an abnormality in the left lung apex.
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Substances & structures in the body
- abductor
- accessorius
- adductor
- agonist
- alveolus
- amyloid
- atheroma
- caecum
- gyrus
- hallucis
- hilum
- hilus
- hormonal
- lymph vessel
- periosteum
- peritoneal
- peritoneum
- phosphatase
- platysma
- vitreous humour
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apical
adjective uk/ˈeɪ.pɪ.kəl/us/ˈeɪ.pɪ.kəl/