sensitive sensitive /ˈsɛnsɪtɪv/

adjective

1. () Responsive to physical stimuli  ( sensitive )
   responsive to physical stimuli
    A mimosa's leaves are sensitive to touch
   a mimosa's leaves are sensitive to touch
    A sensitive voltmeter
   a sensitive voltmeter
    Sensitive skin
   sensitive skin
    Sensitive to light
   sensitive to light
   
2. () Being susceptible to the attitudes, feelings, or circumstances of others  ( sensitive )
   being susceptible to the attitudes, feelings, or circumstances of others
    Sensitive to the local community and its needs
   sensitive to the local community and its needs
   
3. Of or pertaining to classified information or matters affecting national security  ( sensitive )
   of or pertaining to classified information or matters affecting national security
   
4. Hurting  ( raw , sensitive , tender , sore )
   hurting
    The tender spot on his jaw
   the tender spot on his jaw
   
5. Able to feel or perceive  ( sensible , sensitive )
   able to feel or perceive
    Even amoeba are sensible creatures
   even amoeba are sensible creatures
    The more sensible parts of the skin
   the more sensible parts of the skin
   

noun

1. Someone who serves as an intermediary between the living and the dead  ( medium , sensitive , spiritualist )
   someone who serves as an intermediary between the living and the dead
    He consulted several mediums
   he consulted several mediums
   
   

 optical lens optical lens /ˈɒptɪkəl lɛnz/

noun

1. A lens that focuses the image in a camera  ( optical lens , camera lens )
   a lens that focuses the image in a camera
    Make sure to clean your camera lens regularly to ensure clear photos.
   Make sure to clean your camera lens regularly to ensure clear photos.
   
   

 Xylaria mali Xylaria mali /zaɪˈlɛəriə ˈmeɪli/

noun

1. Fungus causing black root rot in apples  ( black root rot fungus , Xylaria mali )
   fungus causing black root rot in apples
   
   

 fundamental fundamental /ˌfəndəˈmɛnəl/

adjective

1. () Serving as an essential component  ( primal , cardinal , key , central , fundamental )
   serving as an essential component
    A cardinal rule
   a cardinal rule
    The central cause of the problem
   the central cause of the problem
    An example that was fundamental to the argument
   an example that was fundamental to the argument
    Computers are fundamental to modern industrial structure
   computers are fundamental to modern industrial structure
   
2. () Being or involving basic facts or principles  ( underlying , rudimentary , fundamental )
   being or involving basic facts or principles
    The fundamental laws of the universe
   the fundamental laws of the universe
    A fundamental incompatibility between them
   a fundamental incompatibility between them
    These rudimentary truths
   these rudimentary truths
    Underlying principles
   underlying principles
   
3. () Far-reaching and thoroughgoing in effect especially on the nature of something  ( profound , fundamental )
   far-reaching and thoroughgoing in effect especially on the nature of something
    The fundamental revolution in human values that has occurred
   the fundamental revolution in human values that has occurred
    The book underwent fundamental changes
   the book underwent fundamental changes
    Committed the fundamental error of confusing spending with extravagance
   committed the fundamental error of confusing spending with extravagance
    Profound social changes
   profound social changes
   

noun

1. The lowest tone of a harmonic series  ( first harmonic , fundamental , fundamental frequency )
   the lowest tone of a harmonic series
   
   
2. Any factor that could be considered important to the understanding of a particular business  ( fundamental )
   any factor that could be considered important to the understanding of a particular business
    Fundamentals include a company's growth, revenues, earnings, management, and capital structure
   fundamentals include a company's growth, revenues, earnings, management, and capital structure