Exam: IELTS

Definition: In a way that is not required or compulsory; something that can be chosen or done if desired.

Example: You can optionally include your phone number on the form.

Definition: Relating to technology that combines light (optical) and electronic components, often used in devices like sensors and lasers.

Example: The optoelectronic device converts light signals into electrical signals.

Definition: A field of science that studies how light and electricity interact and can be converted into each other.

Example: Optoelectronics is essential for the development of devices like lasers and solar cells.

Definition: Related to the field of optometry, which is the practice of examining and treating vision problems and eye diseases.

Example: She decided to pursue a career in optometric science to help people with their vision.

Definition: A professional who examines eyes to find vision problems, diagnoses issues, and prescribes glasses or other treatments.

Example: I need to see an optometrist for my eye exam.

Definition: The profession that focuses on examining eyes, diagnosing vision problems, and providing corrective lenses or treatments.

Example: She decided to study optometry to help people see better.

Definition: Relating to devices that combine optical and electronic components, often used in technology for processing light signals.

Example: The new optronic sensors are capable of detecting light in various wavelengths.

Definition: A state of having a lot of wealth, luxury, and richness.

Example: The palace was a symbol of opulence, filled with gold and precious jewels.

Definition: A state of great wealth or luxury, often characterized by lavishness and abundance.

Example: The opulency of the palace was evident in its gold decorations and grand furnishings.

Definition: Describing something that is very rich and luxurious, often showing great wealth and abundance.

Example: The opulent mansion was filled with gold decorations and expensive furniture.