Pronunciation: [ˈɪndɛks fˈɪŋɡə] (IPA) 
The index finger is spelled [ˈɪndeks ˈfɪŋɡər]. The first syllable is pronounced with the sound /ɪ/, which is short and unstressed. The second syllable is pronounced with the sound /deks/, which is stressed and rhymes with "text". The spelling of the word "index" comes from the Latin word "indicō", meaning "to point out". The finger is called the "index finger" because it is often used to point or indicate something.
The index finger, also commonly known as the forefinger or pointer finger, is one of the five digits on the human hand. It is situated between the thumb and the middle finger and is considered the most important and versatile finger due to its functional and communicative capabilities.
In terms of anatomical structure, the index finger is the second digit, counting from the thumb, and is attached to the hand through the metacarpal bone. It consists of three phalanges: the proximal phalanx, the middle phalanx, and the distal phalanx. These phalanges provide the index finger with flexibility and maneuverability, allowing it to perform various complex tasks.
The index finger plays a crucial role in human interaction, primarily as a pointing device to indicate or direct attention to a specific object or location. Its extended position while pointing differentiates it from other fingers. Additionally, the index finger aids in grasping, picking up small objects, and performing delicate tasks that require precision, such as typing on a keyboard, writing, or operating certain tools.
Symbolically, the index finger is often associated with authority, instruction, and guidance. Various cultures and societies employ it to indicate direction, command attention, or convey a non-verbal message. Furthermore, the index finger is used in certain hand gestures and sign languages to express specific meanings, reinforcing its significance as a communication tool.
The word "index" in "index finger" has its roots in Latin. It comes from the Latin word "indīcō", which means "to point out" or "to indicate". The term "index finger" refers to the finger that is typically used for pointing or indicating something, hence the name "index" finger.
